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<title>[45678] trunk/src: Coding Standards: Move `wp-includes/date.php` to `wp-includes/class-wp-date-query.php`.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/45678">45678</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/45678","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>SergeyBiryukov</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2019-07-25 23:30:21 +0000 (Thu, 25 Jul 2019)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Coding Standards: Move `wp-includes/date.php` to `wp-includes/class-wp-date-query.php`.

This renames the file containing the `WP_Date_Query` class to conform to the coding standards.

This commit also includes:

- A new `date.php` that includes the new file, for anyone that may've been including the file directly.
- Replaces references to the old filename with the new filename.

Fixes <a href="https://core.trac.wordpress.org/ticket/47775">#47775</a>. See <a href="https://core.trac.wordpress.org/ticket/47632">#47632</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpsettingsphp">trunk/src/wp-settings.php</a></li>
</ul>

<h3>Added Paths</h3>
<ul>
<li><a href="#trunksrcwpincludesclasswpdatequeryphp">trunk/src/wp-includes/class-wp-date-query.php</a></li>
<li><a href="#trunksrcwpincludesdatephp">trunk/src/wp-includes/date.php</a></li>
</ul>

<h3>Removed Paths</h3>
<ul>
<li><a href="#trunksrcwpincludesdatephp">trunk/src/wp-includes/date.php</a></li>
</ul>

</div>
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<h3>Diff</h3>
<a id="trunksrcwpincludesclasswpdatequeryphpfromrev45677trunksrcwpincludesdatephp"></a>
<div class="copfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Copied: trunk/src/wp-includes/class-wp-date-query.php (from rev 45677, trunk/src/wp-includes/date.php)</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/class-wp-date-query.php                             (rev 0)
+++ trunk/src/wp-includes/class-wp-date-query.php       2019-07-25 23:30:21 UTC (rev 45678)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -0,0 +1,1040 @@
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+<?php
+/**
+ * Class for generating SQL clauses that filter a primary query according to date.
+ *
+ * WP_Date_Query is a helper that allows primary query classes, such as WP_Query, to filter
+ * their results by date columns, by generating `WHERE` subclauses to be attached to the
+ * primary SQL query string.
+ *
+ * Attempting to filter by an invalid date value (eg month=13) will generate SQL that will
+ * return no results. In these cases, a _doing_it_wrong() error notice is also thrown.
+ * See WP_Date_Query::validate_date_values().
+ *
+ * @link https://developer.wordpress.org/reference/classes/wp_query/
+ *
+ * @since 3.7.0
+ */
+class WP_Date_Query {
+       /**
+        * Array of date queries.
+        *
+        * See WP_Date_Query::__construct() for information on date query arguments.
+        *
+        * @since 3.7.0
+        * @var array
+        */
+       public $queries = array();
+
+       /**
+        * The default relation between top-level queries. Can be either 'AND' or 'OR'.
+        *
+        * @since 3.7.0
+        * @var string
+        */
+       public $relation = 'AND';
+
+       /**
+        * The column to query against. Can be changed via the query arguments.
+        *
+        * @since 3.7.0
+        * @var string
+        */
+       public $column = 'post_date';
+
+       /**
+        * The value comparison operator. Can be changed via the query arguments.
+        *
+        * @since 3.7.0
+        * @var array
+        */
+       public $compare = '=';
+
+       /**
+        * Supported time-related parameter keys.
+        *
+        * @since 4.1.0
+        * @var array
+        */
+       public $time_keys = array( 'after', 'before', 'year', 'month', 'monthnum', 'week', 'w', 'dayofyear', 'day', 'dayofweek', 'dayofweek_iso', 'hour', 'minute', 'second' );
+
+       /**
+        * Constructor.
+        *
+        * Time-related parameters that normally require integer values ('year', 'month', 'week', 'dayofyear', 'day',
+        * 'dayofweek', 'dayofweek_iso', 'hour', 'minute', 'second') accept arrays of integers for some values of
+        * 'compare'. When 'compare' is 'IN' or 'NOT IN', arrays are accepted; when 'compare' is 'BETWEEN' or 'NOT
+        * BETWEEN', arrays of two valid values are required. See individual argument descriptions for accepted values.
+        *
+        * @since 3.7.0
+        * @since 4.0.0 The $inclusive logic was updated to include all times within the date range.
+        * @since 4.1.0 Introduced 'dayofweek_iso' time type parameter.
+        *
+        * @param array $date_query {
+        *     Array of date query clauses.
+        *
+        *     @type array {
+        *         @type string $column   Optional. The column to query against. If undefined, inherits the value of
+        *                                the `$default_column` parameter. Accepts 'post_date', 'post_date_gmt',
+        *                                'post_modified','post_modified_gmt', 'comment_date', 'comment_date_gmt'.
+        *                                Default 'post_date'.
+        *         @type string $compare  Optional. The comparison operator. Accepts '=', '!=', '>', '>=', '<', '<=',
+        *                                'IN', 'NOT IN', 'BETWEEN', 'NOT BETWEEN'. Default '='.
+        *         @type string $relation Optional. The boolean relationship between the date queries. Accepts 'OR' or 'AND'.
+        *                                Default 'OR'.
+        *         @type array {
+        *             Optional. An array of first-order clause parameters, or another fully-formed date query.
+        *
+        *             @type string|array $before {
+        *                 Optional. Date to retrieve posts before. Accepts `strtotime()`-compatible string,
+        *                 or array of 'year', 'month', 'day' values.
+        *
+        *                 @type string $year  The four-digit year. Default empty. Accepts any four-digit year.
+        *                 @type string $month Optional when passing array.The month of the year.
+        *                                     Default (string:empty)|(array:1). Accepts numbers 1-12.
+        *                 @type string $day   Optional when passing array.The day of the month.
+        *                                     Default (string:empty)|(array:1). Accepts numbers 1-31.
+        *             }
+        *             @type string|array $after {
+        *                 Optional. Date to retrieve posts after. Accepts `strtotime()`-compatible string,
+        *                 or array of 'year', 'month', 'day' values.
+        *
+        *                 @type string $year  The four-digit year. Accepts any four-digit year. Default empty.
+        *                 @type string $month Optional when passing array. The month of the year. Accepts numbers 1-12.
+        *                                     Default (string:empty)|(array:12).
+        *                 @type string $day   Optional when passing array.The day of the month. Accepts numbers 1-31.
+        *                                     Default (string:empty)|(array:last day of month).
+        *             }
+        *             @type string       $column        Optional. Used to add a clause comparing a column other than the
+        *                                               column specified in the top-level `$column` parameter. Accepts
+        *                                               'post_date', 'post_date_gmt', 'post_modified', 'post_modified_gmt',
+        *                                               'comment_date', 'comment_date_gmt'. Default is the value of
+        *                                               top-level `$column`.
+        *             @type string       $compare       Optional. The comparison operator. Accepts '=', '!=', '>', '>=',
+        *                                               '<', '<=', 'IN', 'NOT IN', 'BETWEEN', 'NOT BETWEEN'. 'IN',
+        *                                               'NOT IN', 'BETWEEN', and 'NOT BETWEEN'. Comparisons support
+        *                                               arrays in some time-related parameters. Default '='.
+        *             @type bool         $inclusive     Optional. Include results from dates specified in 'before' or
+        *                                               'after'. Default false.
+        *             @type int|array    $year          Optional. The four-digit year number. Accepts any four-digit year
+        *                                               or an array of years if `$compare` supports it. Default empty.
+        *             @type int|array    $month         Optional. The two-digit month number. Accepts numbers 1-12 or an
+        *                                               array of valid numbers if `$compare` supports it. Default empty.
+        *             @type int|array    $week          Optional. The week number of the year. Accepts numbers 0-53 or an
+        *                                               array of valid numbers if `$compare` supports it. Default empty.
+        *             @type int|array    $dayofyear     Optional. The day number of the year. Accepts numbers 1-366 or an
+        *                                               array of valid numbers if `$compare` supports it.
+        *             @type int|array    $day           Optional. The day of the month. Accepts numbers 1-31 or an array
+        *                                               of valid numbers if `$compare` supports it. Default empty.
+        *             @type int|array    $dayofweek     Optional. The day number of the week. Accepts numbers 1-7 (1 is
+        *                                               Sunday) or an array of valid numbers if `$compare` supports it.
+        *                                               Default empty.
+        *             @type int|array    $dayofweek_iso Optional. The day number of the week (ISO). Accepts numbers 1-7
+        *                                               (1 is Monday) or an array of valid numbers if `$compare` supports it.
+        *                                               Default empty.
+        *             @type int|array    $hour          Optional. The hour of the day. Accepts numbers 0-23 or an array
+        *                                               of valid numbers if `$compare` supports it. Default empty.
+        *             @type int|array    $minute        Optional. The minute of the hour. Accepts numbers 0-60 or an array
+        *                                               of valid numbers if `$compare` supports it. Default empty.
+        *             @type int|array    $second        Optional. The second of the minute. Accepts numbers 0-60 or an
+        *                                               array of valid numbers if `$compare` supports it. Default empty.
+        *         }
+        *     }
+        * }
+        * @param string $default_column Optional. Default column to query against. Default 'post_date'.
+        *                               Accepts 'post_date', 'post_date_gmt', 'post_modified', 'post_modified_gmt',
+        *                               'comment_date', 'comment_date_gmt'.
+        */
+       public function __construct( $date_query, $default_column = 'post_date' ) {
+               if ( isset( $date_query['relation'] ) && 'OR' === strtoupper( $date_query['relation'] ) ) {
+                       $this->relation = 'OR';
+               } else {
+                       $this->relation = 'AND';
+               }
+
+               if ( ! is_array( $date_query ) ) {
+                       return;
+               }
+
+               // Support for passing time-based keys in the top level of the $date_query array.
+               if ( ! isset( $date_query[0] ) && ! empty( $date_query ) ) {
+                       $date_query = array( $date_query );
+               }
+
+               if ( empty( $date_query ) ) {
+                       return;
+               }
+
+               if ( ! empty( $date_query['column'] ) ) {
+                       $date_query['column'] = esc_sql( $date_query['column'] );
+               } else {
+                       $date_query['column'] = esc_sql( $default_column );
+               }
+
+               $this->column = $this->validate_column( $this->column );
+
+               $this->compare = $this->get_compare( $date_query );
+
+               $this->queries = $this->sanitize_query( $date_query );
+       }
+
+       /**
+        * Recursive-friendly query sanitizer.
+        *
+        * Ensures that each query-level clause has a 'relation' key, and that
+        * each first-order clause contains all the necessary keys from
+        * `$defaults`.
+        *
+        * @since 4.1.0
+        *
+        * @param array $queries
+        * @param array $parent_query
+        *
+        * @return array Sanitized queries.
+        */
+       public function sanitize_query( $queries, $parent_query = null ) {
+               $cleaned_query = array();
+
+               $defaults = array(
+                       'column'   => 'post_date',
+                       'compare'  => '=',
+                       'relation' => 'AND',
+               );
+
+               // Numeric keys should always have array values.
+               foreach ( $queries as $qkey => $qvalue ) {
+                       if ( is_numeric( $qkey ) && ! is_array( $qvalue ) ) {
+                               unset( $queries[ $qkey ] );
+                       }
+               }
+
+               // Each query should have a value for each default key. Inherit from the parent when possible.
+               foreach ( $defaults as $dkey => $dvalue ) {
+                       if ( isset( $queries[ $dkey ] ) ) {
+                               continue;
+                       }
+
+                       if ( isset( $parent_query[ $dkey ] ) ) {
+                               $queries[ $dkey ] = $parent_query[ $dkey ];
+                       } else {
+                               $queries[ $dkey ] = $dvalue;
+                       }
+               }
+
+               // Validate the dates passed in the query.
+               if ( $this->is_first_order_clause( $queries ) ) {
+                       $this->validate_date_values( $queries );
+               }
+
+               foreach ( $queries as $key => $q ) {
+                       if ( ! is_array( $q ) || in_array( $key, $this->time_keys, true ) ) {
+                               // This is a first-order query. Trust the values and sanitize when building SQL.
+                               $cleaned_query[ $key ] = $q;
+                       } else {
+                               // Any array without a time key is another query, so we recurse.
+                               $cleaned_query[] = $this->sanitize_query( $q, $queries );
+                       }
+               }
+
+               return $cleaned_query;
+       }
+
+       /**
+        * Determine whether this is a first-order clause.
+        *
+        * Checks to see if the current clause has any time-related keys.
+        * If so, it's first-order.
+        *
+        * @since 4.1.0
+        *
+        * @param  array $query Query clause.
+        * @return bool True if this is a first-order clause.
+        */
+       protected function is_first_order_clause( $query ) {
+               $time_keys = array_intersect( $this->time_keys, array_keys( $query ) );
+               return ! empty( $time_keys );
+       }
+
+       /**
+        * Determines and validates what comparison operator to use.
+        *
+        * @since 3.7.0
+        *
+        * @param array $query A date query or a date subquery.
+        * @return string The comparison operator.
+        */
+       public function get_compare( $query ) {
+               if ( ! empty( $query['compare'] ) && in_array( $query['compare'], array( '=', '!=', '>', '>=', '<', '<=', 'IN', 'NOT IN', 'BETWEEN', 'NOT BETWEEN' ) ) ) {
+                       return strtoupper( $query['compare'] );
+               }
+
+               return $this->compare;
+       }
+
+       /**
+        * Validates the given date_query values and triggers errors if something is not valid.
+        *
+        * Note that date queries with invalid date ranges are allowed to
+        * continue (though of course no items will be found for impossible dates).
+        * This method only generates debug notices for these cases.
+        *
+        * @since  4.1.0
+        *
+        * @param  array $date_query The date_query array.
+        * @return bool  True if all values in the query are valid, false if one or more fail.
+        */
+       public function validate_date_values( $date_query = array() ) {
+               if ( empty( $date_query ) ) {
+                       return false;
+               }
+
+               $valid = true;
+
+               /*
+                * Validate 'before' and 'after' up front, then let the
+                * validation routine continue to be sure that all invalid
+                * values generate errors too.
+                */
+               if ( array_key_exists( 'before', $date_query ) && is_array( $date_query['before'] ) ) {
+                       $valid = $this->validate_date_values( $date_query['before'] );
+               }
+
+               if ( array_key_exists( 'after', $date_query ) && is_array( $date_query['after'] ) ) {
+                       $valid = $this->validate_date_values( $date_query['after'] );
+               }
+
+               // Array containing all min-max checks.
+               $min_max_checks = array();
+
+               // Days per year.
+               if ( array_key_exists( 'year', $date_query ) ) {
+                       /*
+                        * If a year exists in the date query, we can use it to get the days.
+                        * If multiple years are provided (as in a BETWEEN), use the first one.
+                        */
+                       if ( is_array( $date_query['year'] ) ) {
+                               $_year = reset( $date_query['year'] );
+                       } else {
+                               $_year = $date_query['year'];
+                       }
+
+                       $max_days_of_year = gmdate( 'z', mktime( 0, 0, 0, 12, 31, $_year ) ) + 1;
+               } else {
+                       // otherwise we use the max of 366 (leap-year)
+                       $max_days_of_year = 366;
+               }
+
+               $min_max_checks['dayofyear'] = array(
+                       'min' => 1,
+                       'max' => $max_days_of_year,
+               );
+
+               // Days per week.
+               $min_max_checks['dayofweek'] = array(
+                       'min' => 1,
+                       'max' => 7,
+               );
+
+               // Days per week.
+               $min_max_checks['dayofweek_iso'] = array(
+                       'min' => 1,
+                       'max' => 7,
+               );
+
+               // Months per year.
+               $min_max_checks['month'] = array(
+                       'min' => 1,
+                       'max' => 12,
+               );
+
+               // Weeks per year.
+               if ( isset( $_year ) ) {
+                       /*
+                        * If we have a specific year, use it to calculate number of weeks.
+                        * Note: the number of weeks in a year is the date in which Dec 28 appears.
+                        */
+                       $week_count = gmdate( 'W', mktime( 0, 0, 0, 12, 28, $_year ) );
+
+               } else {
+                       // Otherwise set the week-count to a maximum of 53.
+                       $week_count = 53;
+               }
+
+               $min_max_checks['week'] = array(
+                       'min' => 1,
+                       'max' => $week_count,
+               );
+
+               // Days per month.
+               $min_max_checks['day'] = array(
+                       'min' => 1,
+                       'max' => 31,
+               );
+
+               // Hours per day.
+               $min_max_checks['hour'] = array(
+                       'min' => 0,
+                       'max' => 23,
+               );
+
+               // Minutes per hour.
+               $min_max_checks['minute'] = array(
+                       'min' => 0,
+                       'max' => 59,
+               );
+
+               // Seconds per minute.
+               $min_max_checks['second'] = array(
+                       'min' => 0,
+                       'max' => 59,
+               );
+
+               // Concatenate and throw a notice for each invalid value.
+               foreach ( $min_max_checks as $key => $check ) {
+                       if ( ! array_key_exists( $key, $date_query ) ) {
+                               continue;
+                       }
+
+                       // Throw a notice for each failing value.
+                       foreach ( (array) $date_query[ $key ] as $_value ) {
+                               $is_between = $_value >= $check['min'] && $_value <= $check['max'];
+
+                               if ( ! is_numeric( $_value ) || ! $is_between ) {
+                                       $error = sprintf(
+                                               /* translators: Date query invalid date message: 1: invalid value, 2: type of value, 3: minimum valid value, 4: maximum valid value */
+                                               __( 'Invalid value %1$s for %2$s. Expected value should be between %3$s and %4$s.' ),
+                                               '<code>' . esc_html( $_value ) . '</code>',
+                                               '<code>' . esc_html( $key ) . '</code>',
+                                               '<code>' . esc_html( $check['min'] ) . '</code>',
+                                               '<code>' . esc_html( $check['max'] ) . '</code>'
+                                       );
+
+                                       _doing_it_wrong( __CLASS__, $error, '4.1.0' );
+
+                                       $valid = false;
+                               }
+                       }
+               }
+
+               // If we already have invalid date messages, don't bother running through checkdate().
+               if ( ! $valid ) {
+                       return $valid;
+               }
+
+               $day_month_year_error_msg = '';
+
+               $day_exists   = array_key_exists( 'day', $date_query ) && is_numeric( $date_query['day'] );
+               $month_exists = array_key_exists( 'month', $date_query ) && is_numeric( $date_query['month'] );
+               $year_exists  = array_key_exists( 'year', $date_query ) && is_numeric( $date_query['year'] );
+
+               if ( $day_exists && $month_exists && $year_exists ) {
+                       // 1. Checking day, month, year combination.
+                       if ( ! wp_checkdate( $date_query['month'], $date_query['day'], $date_query['year'], sprintf( '%s-%s-%s', $date_query['year'], $date_query['month'], $date_query['day'] ) ) ) {
+                               /* translators: 1: year, 2: month, 3: day of month */
+                               $day_month_year_error_msg = sprintf(
+                                       __( 'The following values do not describe a valid date: year %1$s, month %2$s, day %3$s.' ),
+                                       '<code>' . esc_html( $date_query['year'] ) . '</code>',
+                                       '<code>' . esc_html( $date_query['month'] ) . '</code>',
+                                       '<code>' . esc_html( $date_query['day'] ) . '</code>'
+                               );
+
+                               $valid = false;
+                       }
+               } elseif ( $day_exists && $month_exists ) {
+                       /*
+                        * 2. checking day, month combination
+                        * We use 2012 because, as a leap year, it's the most permissive.
+                        */
+                       if ( ! wp_checkdate( $date_query['month'], $date_query['day'], 2012, sprintf( '2012-%s-%s', $date_query['month'], $date_query['day'] ) ) ) {
+                               /* translators: 1: month, 2: day of month */
+                               $day_month_year_error_msg = sprintf(
+                                       __( 'The following values do not describe a valid date: month %1$s, day %2$s.' ),
+                                       '<code>' . esc_html( $date_query['month'] ) . '</code>',
+                                       '<code>' . esc_html( $date_query['day'] ) . '</code>'
+                               );
+
+                               $valid = false;
+                       }
+               }
+
+               if ( ! empty( $day_month_year_error_msg ) ) {
+                       _doing_it_wrong( __CLASS__, $day_month_year_error_msg, '4.1.0' );
+               }
+
+               return $valid;
+       }
+
+       /**
+        * Validates a column name parameter.
+        *
+        * Column names without a table prefix (like 'post_date') are checked against a whitelist of
+        * known tables, and then, if found, have a table prefix (such as 'wp_posts.') prepended.
+        * Prefixed column names (such as 'wp_posts.post_date') bypass this whitelist check,
+        * and are only sanitized to remove illegal characters.
+        *
+        * @since 3.7.0
+        *
+        * @param string $column The user-supplied column name.
+        * @return string A validated column name value.
+        */
+       public function validate_column( $column ) {
+               global $wpdb;
+
+               $valid_columns = array(
+                       'post_date',
+                       'post_date_gmt',
+                       'post_modified',
+                       'post_modified_gmt',
+                       'comment_date',
+                       'comment_date_gmt',
+                       'user_registered',
+                       'registered',
+                       'last_updated',
+               );
+
+               // Attempt to detect a table prefix.
+               if ( false === strpos( $column, '.' ) ) {
+                       /**
+                        * Filters the list of valid date query columns.
+                        *
+                        * @since 3.7.0
+                        * @since 4.1.0 Added 'user_registered' to the default recognized columns.
+                        *
+                        * @param string[] $valid_columns An array of valid date query columns. Defaults
+                        *                                are 'post_date', 'post_date_gmt', 'post_modified',
+                        *                                'post_modified_gmt', 'comment_date', 'comment_date_gmt',
+                        *                                'user_registered'
+                        */
+                       if ( ! in_array( $column, apply_filters( 'date_query_valid_columns', $valid_columns ) ) ) {
+                               $column = 'post_date';
+                       }
+
+                       $known_columns = array(
+                               $wpdb->posts    => array(
+                                       'post_date',
+                                       'post_date_gmt',
+                                       'post_modified',
+                                       'post_modified_gmt',
+                               ),
+                               $wpdb->comments => array(
+                                       'comment_date',
+                                       'comment_date_gmt',
+                               ),
+                               $wpdb->users    => array(
+                                       'user_registered',
+                               ),
+                               $wpdb->blogs    => array(
+                                       'registered',
+                                       'last_updated',
+                               ),
+                       );
+
+                       // If it's a known column name, add the appropriate table prefix.
+                       foreach ( $known_columns as $table_name => $table_columns ) {
+                               if ( in_array( $column, $table_columns ) ) {
+                                       $column = $table_name . '.' . $column;
+                                       break;
+                               }
+                       }
+               }
+
+               // Remove unsafe characters.
+               return preg_replace( '/[^a-zA-Z0-9_$\.]/', '', $column );
+       }
+
+       /**
+        * Generate WHERE clause to be appended to a main query.
+        *
+        * @since 3.7.0
+        *
+        * @return string MySQL WHERE clause.
+        */
+       public function get_sql() {
+               $sql = $this->get_sql_clauses();
+
+               $where = $sql['where'];
+
+               /**
+                * Filters the date query WHERE clause.
+                *
+                * @since 3.7.0
+                *
+                * @param string        $where WHERE clause of the date query.
+                * @param WP_Date_Query $this  The WP_Date_Query instance.
+                */
+               return apply_filters( 'get_date_sql', $where, $this );
+       }
+
+       /**
+        * Generate SQL clauses to be appended to a main query.
+        *
+        * Called by the public WP_Date_Query::get_sql(), this method is abstracted
+        * out to maintain parity with the other Query classes.
+        *
+        * @since 4.1.0
+        *
+        * @return array {
+        *     Array containing JOIN and WHERE SQL clauses to append to the main query.
+        *
+        *     @type string $join  SQL fragment to append to the main JOIN clause.
+        *     @type string $where SQL fragment to append to the main WHERE clause.
+        * }
+        */
+       protected function get_sql_clauses() {
+               $sql = $this->get_sql_for_query( $this->queries );
+
+               if ( ! empty( $sql['where'] ) ) {
+                       $sql['where'] = ' AND ' . $sql['where'];
+               }
+
+               return $sql;
+       }
+
+       /**
+        * Generate SQL clauses for a single query array.
+        *
+        * If nested subqueries are found, this method recurses the tree to
+        * produce the properly nested SQL.
+        *
+        * @since 4.1.0
+        *
+        * @param array $query Query to parse.
+        * @param int   $depth Optional. Number of tree levels deep we currently are.
+        *                     Used to calculate indentation. Default 0.
+        * @return array {
+        *     Array containing JOIN and WHERE SQL clauses to append to a single query array.
+        *
+        *     @type string $join  SQL fragment to append to the main JOIN clause.
+        *     @type string $where SQL fragment to append to the main WHERE clause.
+        * }
+        */
+       protected function get_sql_for_query( $query, $depth = 0 ) {
+               $sql_chunks = array(
+                       'join'  => array(),
+                       'where' => array(),
+               );
+
+               $sql = array(
+                       'join'  => '',
+                       'where' => '',
+               );
+
+               $indent = '';
+               for ( $i = 0; $i < $depth; $i++ ) {
+                       $indent .= '  ';
+               }
+
+               foreach ( $query as $key => $clause ) {
+                       if ( 'relation' === $key ) {
+                               $relation = $query['relation'];
+                       } elseif ( is_array( $clause ) ) {
+
+                               // This is a first-order clause.
+                               if ( $this->is_first_order_clause( $clause ) ) {
+                                       $clause_sql = $this->get_sql_for_clause( $clause, $query );
+
+                                       $where_count = count( $clause_sql['where'] );
+                                       if ( ! $where_count ) {
+                                               $sql_chunks['where'][] = '';
+                                       } elseif ( 1 === $where_count ) {
+                                               $sql_chunks['where'][] = $clause_sql['where'][0];
+                                       } else {
+                                               $sql_chunks['where'][] = '( ' . implode( ' AND ', $clause_sql['where'] ) . ' )';
+                                       }
+
+                                       $sql_chunks['join'] = array_merge( $sql_chunks['join'], $clause_sql['join'] );
+                                       // This is a subquery, so we recurse.
+                               } else {
+                                       $clause_sql = $this->get_sql_for_query( $clause, $depth + 1 );
+
+                                       $sql_chunks['where'][] = $clause_sql['where'];
+                                       $sql_chunks['join'][]  = $clause_sql['join'];
+                               }
+                       }
+               }
+
+               // Filter to remove empties.
+               $sql_chunks['join']  = array_filter( $sql_chunks['join'] );
+               $sql_chunks['where'] = array_filter( $sql_chunks['where'] );
+
+               if ( empty( $relation ) ) {
+                       $relation = 'AND';
+               }
+
+               // Filter duplicate JOIN clauses and combine into a single string.
+               if ( ! empty( $sql_chunks['join'] ) ) {
+                       $sql['join'] = implode( ' ', array_unique( $sql_chunks['join'] ) );
+               }
+
+               // Generate a single WHERE clause with proper brackets and indentation.
+               if ( ! empty( $sql_chunks['where'] ) ) {
+                       $sql['where'] = '( ' . "\n  " . $indent . implode( ' ' . "\n  " . $indent . $relation . ' ' . "\n  " . $indent, $sql_chunks['where'] ) . "\n" . $indent . ')';
+               }
+
+               return $sql;
+       }
+
+       /**
+        * Turns a single date clause into pieces for a WHERE clause.
+        *
+        * A wrapper for get_sql_for_clause(), included here for backward
+        * compatibility while retaining the naming convention across Query classes.
+        *
+        * @since  3.7.0
+        *
+        * @param  array $query Date query arguments.
+        * @return array {
+        *     Array containing JOIN and WHERE SQL clauses to append to the main query.
+        *
+        *     @type string $join  SQL fragment to append to the main JOIN clause.
+        *     @type string $where SQL fragment to append to the main WHERE clause.
+        * }
+        */
+       protected function get_sql_for_subquery( $query ) {
+               return $this->get_sql_for_clause( $query, '' );
+       }
+
+       /**
+        * Turns a first-order date query into SQL for a WHERE clause.
+        *
+        * @since  4.1.0
+        *
+        * @param  array $query        Date query clause.
+        * @param  array $parent_query Parent query of the current date query.
+        * @return array {
+        *     Array containing JOIN and WHERE SQL clauses to append to the main query.
+        *
+        *     @type string $join  SQL fragment to append to the main JOIN clause.
+        *     @type string $where SQL fragment to append to the main WHERE clause.
+        * }
+        */
+       protected function get_sql_for_clause( $query, $parent_query ) {
+               global $wpdb;
+
+               // The sub-parts of a $where part.
+               $where_parts = array();
+
+               $column = ( ! empty( $query['column'] ) ) ? esc_sql( $query['column'] ) : $this->column;
+
+               $column = $this->validate_column( $column );
+
+               $compare = $this->get_compare( $query );
+
+               $inclusive = ! empty( $query['inclusive'] );
+
+               // Assign greater- and less-than values.
+               $lt = '<';
+               $gt = '>';
+
+               if ( $inclusive ) {
+                       $lt .= '=';
+                       $gt .= '=';
+               }
+
+               // Range queries.
+               if ( ! empty( $query['after'] ) ) {
+                       $where_parts[] = $wpdb->prepare( "$column $gt %s", $this->build_mysql_datetime( $query['after'], ! $inclusive ) );
+               }
+               if ( ! empty( $query['before'] ) ) {
+                       $where_parts[] = $wpdb->prepare( "$column $lt %s", $this->build_mysql_datetime( $query['before'], $inclusive ) );
+               }
+               // Specific value queries.
+
+               $date_units = array(
+                       'YEAR'           => array( 'year' ),
+                       'MONTH'          => array( 'month', 'monthnum' ),
+                       '_wp_mysql_week' => array( 'week', 'w' ),
+                       'DAYOFYEAR'      => array( 'dayofyear' ),
+                       'DAYOFMONTH'     => array( 'day' ),
+                       'DAYOFWEEK'      => array( 'dayofweek' ),
+                       'WEEKDAY'        => array( 'dayofweek_iso' ),
+               );
+
+               // Check of the possible date units and add them to the query
+               foreach ( $date_units as $sql_part => $query_parts ) {
+                       foreach ( $query_parts as $query_part ) {
+                               if ( isset( $query[ $query_part ] ) ) {
+                                       $value = $this->build_value( $compare, $query[ $query_part ] );
+                                       if ( $value ) {
+                                               switch ( $sql_part ) {
+                                                       case '_wp_mysql_week':
+                                                               $where_parts[] = _wp_mysql_week( $column ) . " $compare $value";
+                                                               break;
+                                                       case 'WEEKDAY':
+                                                               $where_parts[] = "$sql_part( $column ) + 1 $compare $value";
+                                                               break;
+                                                       default:
+                                                               $where_parts[] = "$sql_part( $column ) $compare $value";
+                                               }
+
+                                               break;
+                                       }
+                               }
+                       }
+               }
+
+               if ( isset( $query['hour'] ) || isset( $query['minute'] ) || isset( $query['second'] ) ) {
+                       // Avoid notices.
+                       foreach ( array( 'hour', 'minute', 'second' ) as $unit ) {
+                               if ( ! isset( $query[ $unit ] ) ) {
+                                       $query[ $unit ] = null;
+                               }
+                       }
+
+                       $time_query = $this->build_time_query( $column, $compare, $query['hour'], $query['minute'], $query['second'] );
+                       if ( $time_query ) {
+                               $where_parts[] = $time_query;
+                       }
+               }
+
+               /*
+                * Return an array of 'join' and 'where' for compatibility
+                * with other query classes.
+                */
+               return array(
+                       'where' => $where_parts,
+                       'join'  => array(),
+               );
+       }
+
+       /**
+        * Builds and validates a value string based on the comparison operator.
+        *
+        * @since 3.7.0
+        *
+        * @param string $compare The compare operator to use
+        * @param string|array $value The value
+        * @return string|false|int The value to be used in SQL or false on error.
+        */
+       public function build_value( $compare, $value ) {
+               if ( ! isset( $value ) ) {
+                       return false;
+               }
+
+               switch ( $compare ) {
+                       case 'IN':
+                       case 'NOT IN':
+                               $value = (array) $value;
+
+                               // Remove non-numeric values.
+                               $value = array_filter( $value, 'is_numeric' );
+
+                               if ( empty( $value ) ) {
+                                       return false;
+                               }
+
+                               return '(' . implode( ',', array_map( 'intval', $value ) ) . ')';
+
+                       case 'BETWEEN':
+                       case 'NOT BETWEEN':
+                               if ( ! is_array( $value ) || 2 != count( $value ) ) {
+                                       $value = array( $value, $value );
+                               } else {
+                                       $value = array_values( $value );
+                               }
+
+                               // If either value is non-numeric, bail.
+                               foreach ( $value as $v ) {
+                                       if ( ! is_numeric( $v ) ) {
+                                               return false;
+                                       }
+                               }
+
+                               $value = array_map( 'intval', $value );
+
+                               return $value[0] . ' AND ' . $value[1];
+
+                       default:
+                               if ( ! is_numeric( $value ) ) {
+                                       return false;
+                               }
+
+                               return (int) $value;
+               }
+       }
+
+       /**
+        * Builds a MySQL format date/time based on some query parameters.
+        *
+        * You can pass an array of values (year, month, etc.) with missing parameter values being defaulted to
+        * either the maximum or minimum values (controlled by the $default_to parameter). Alternatively you can
+        * pass a string that will be run through strtotime().
+        *
+        * @since 3.7.0
+        *
+        * @param string|array $datetime       An array of parameters or a strotime() string
+        * @param bool         $default_to_max Whether to round up incomplete dates. Supported by values
+        *                                     of $datetime that are arrays, or string values that are a
+        *                                     subset of MySQL date format ('Y', 'Y-m', 'Y-m-d', 'Y-m-d H:i').
+        *                                     Default: false.
+        * @return string|false A MySQL format date/time or false on failure
+        */
+       public function build_mysql_datetime( $datetime, $default_to_max = false ) {
+               $now = current_time( 'timestamp' );
+
+               if ( ! is_array( $datetime ) ) {
+
+                       /*
+                        * Try to parse some common date formats, so we can detect
+                        * the level of precision and support the 'inclusive' parameter.
+                        */
+                       if ( preg_match( '/^(\d{4})$/', $datetime, $matches ) ) {
+                               // Y
+                               $datetime = array(
+                                       'year' => intval( $matches[1] ),
+                               );
+
+                       } elseif ( preg_match( '/^(\d{4})\-(\d{2})$/', $datetime, $matches ) ) {
+                               // Y-m
+                               $datetime = array(
+                                       'year'  => intval( $matches[1] ),
+                                       'month' => intval( $matches[2] ),
+                               );
+
+                       } elseif ( preg_match( '/^(\d{4})\-(\d{2})\-(\d{2})$/', $datetime, $matches ) ) {
+                               // Y-m-d
+                               $datetime = array(
+                                       'year'  => intval( $matches[1] ),
+                                       'month' => intval( $matches[2] ),
+                                       'day'   => intval( $matches[3] ),
+                               );
+
+                       } elseif ( preg_match( '/^(\d{4})\-(\d{2})\-(\d{2}) (\d{2}):(\d{2})$/', $datetime, $matches ) ) {
+                               // Y-m-d H:i
+                               $datetime = array(
+                                       'year'   => intval( $matches[1] ),
+                                       'month'  => intval( $matches[2] ),
+                                       'day'    => intval( $matches[3] ),
+                                       'hour'   => intval( $matches[4] ),
+                                       'minute' => intval( $matches[5] ),
+                               );
+                       }
+
+                       // If no match is found, we don't support default_to_max.
+                       if ( ! is_array( $datetime ) ) {
+                               // @todo Timezone issues here possibly
+                               return gmdate( 'Y-m-d H:i:s', strtotime( $datetime, $now ) );
+                       }
+               }
+
+               $datetime = array_map( 'absint', $datetime );
+
+               if ( ! isset( $datetime['year'] ) ) {
+                       $datetime['year'] = gmdate( 'Y', $now );
+               }
+
+               if ( ! isset( $datetime['month'] ) ) {
+                       $datetime['month'] = ( $default_to_max ) ? 12 : 1;
+               }
+
+               if ( ! isset( $datetime['day'] ) ) {
+                       $datetime['day'] = ( $default_to_max ) ? (int) gmdate( 't', mktime( 0, 0, 0, $datetime['month'], 1, $datetime['year'] ) ) : 1;
+               }
+
+               if ( ! isset( $datetime['hour'] ) ) {
+                       $datetime['hour'] = ( $default_to_max ) ? 23 : 0;
+               }
+
+               if ( ! isset( $datetime['minute'] ) ) {
+                       $datetime['minute'] = ( $default_to_max ) ? 59 : 0;
+               }
+
+               if ( ! isset( $datetime['second'] ) ) {
+                       $datetime['second'] = ( $default_to_max ) ? 59 : 0;
+               }
+
+               return sprintf( '%04d-%02d-%02d %02d:%02d:%02d', $datetime['year'], $datetime['month'], $datetime['day'], $datetime['hour'], $datetime['minute'], $datetime['second'] );
+       }
+
+       /**
+        * Builds a query string for comparing time values (hour, minute, second).
+        *
+        * If just hour, minute, or second is set than a normal comparison will be done.
+        * However if multiple values are passed, a pseudo-decimal time will be created
+        * in order to be able to accurately compare against.
+        *
+        * @since 3.7.0
+        *
+        * @param string $column The column to query against. Needs to be pre-validated!
+        * @param string $compare The comparison operator. Needs to be pre-validated!
+        * @param int|null $hour Optional. An hour value (0-23).
+        * @param int|null $minute Optional. A minute value (0-59).
+        * @param int|null $second Optional. A second value (0-59).
+        * @return string|false A query part or false on failure.
+        */
+       public function build_time_query( $column, $compare, $hour = null, $minute = null, $second = null ) {
+               global $wpdb;
+
+               // Have to have at least one
+               if ( ! isset( $hour ) && ! isset( $minute ) && ! isset( $second ) ) {
+                       return false;
+               }
+
+               // Complex combined queries aren't supported for multi-value queries
+               if ( in_array( $compare, array( 'IN', 'NOT IN', 'BETWEEN', 'NOT BETWEEN' ) ) ) {
+                       $return = array();
+
+                       $value = $this->build_value( $compare, $hour );
+                       if ( false !== $value ) {
+                               $return[] = "HOUR( $column ) $compare $value";
+                       }
+
+                       $value = $this->build_value( $compare, $minute );
+                       if ( false !== $value ) {
+                               $return[] = "MINUTE( $column ) $compare $value";
+                       }
+
+                       $value = $this->build_value( $compare, $second );
+                       if ( false !== $value ) {
+                               $return[] = "SECOND( $column ) $compare $value";
+                       }
+
+                       return implode( ' AND ', $return );
+               }
+
+               // Cases where just one unit is set
+               if ( isset( $hour ) && ! isset( $minute ) && ! isset( $second ) ) {
+                       $value = $this->build_value( $compare, $hour );
+                       if ( false !== $value ) {
+                               return "HOUR( $column ) $compare $value";
+                       }
+               } elseif ( ! isset( $hour ) && isset( $minute ) && ! isset( $second ) ) {
+                       $value = $this->build_value( $compare, $minute );
+                       if ( false !== $value ) {
+                               return "MINUTE( $column ) $compare $value";
+                       }
+               } elseif ( ! isset( $hour ) && ! isset( $minute ) && isset( $second ) ) {
+                       $value = $this->build_value( $compare, $second );
+                       if ( false !== $value ) {
+                               return "SECOND( $column ) $compare $value";
+                       }
+               }
+
+               // Single units were already handled. Since hour & second isn't allowed, minute must to be set.
+               if ( ! isset( $minute ) ) {
+                       return false;
+               }
+
+               $format = '';
+               $time   = '';
+
+               // Hour
+               if ( null !== $hour ) {
+                       $format .= '%H.';
+                       $time   .= sprintf( '%02d', $hour ) . '.';
+               } else {
+                       $format .= '0.';
+                       $time   .= '0.';
+               }
+
+               // Minute
+               $format .= '%i';
+               $time   .= sprintf( '%02d', $minute );
+
+               if ( isset( $second ) ) {
+                       $format .= '%s';
+                       $time   .= sprintf( '%02d', $second );
+               }
+
+               return $wpdb->prepare( "DATE_FORMAT( $column, %s ) $compare %f", $format, $time );
+       }
+}
</ins></span></pre></div>
<a id="trunksrcwpincludesdatephp"></a>
<div class="delfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Deleted: trunk/src/wp-includes/date.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/date.php    2019-07-25 22:55:36 UTC (rev 45677)
+++ trunk/src/wp-includes/date.php      2019-07-25 23:30:21 UTC (rev 45678)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1,1040 +0,0 @@
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-<?php
-/**
- * Class for generating SQL clauses that filter a primary query according to date.
- *
- * WP_Date_Query is a helper that allows primary query classes, such as WP_Query, to filter
- * their results by date columns, by generating `WHERE` subclauses to be attached to the
- * primary SQL query string.
- *
- * Attempting to filter by an invalid date value (eg month=13) will generate SQL that will
- * return no results. In these cases, a _doing_it_wrong() error notice is also thrown.
- * See WP_Date_Query::validate_date_values().
- *
- * @link https://developer.wordpress.org/reference/classes/wp_query/
- *
- * @since 3.7.0
- */
-class WP_Date_Query {
-       /**
-        * Array of date queries.
-        *
-        * See WP_Date_Query::__construct() for information on date query arguments.
-        *
-        * @since 3.7.0
-        * @var array
-        */
-       public $queries = array();
-
-       /**
-        * The default relation between top-level queries. Can be either 'AND' or 'OR'.
-        *
-        * @since 3.7.0
-        * @var string
-        */
-       public $relation = 'AND';
-
-       /**
-        * The column to query against. Can be changed via the query arguments.
-        *
-        * @since 3.7.0
-        * @var string
-        */
-       public $column = 'post_date';
-
-       /**
-        * The value comparison operator. Can be changed via the query arguments.
-        *
-        * @since 3.7.0
-        * @var array
-        */
-       public $compare = '=';
-
-       /**
-        * Supported time-related parameter keys.
-        *
-        * @since 4.1.0
-        * @var array
-        */
-       public $time_keys = array( 'after', 'before', 'year', 'month', 'monthnum', 'week', 'w', 'dayofyear', 'day', 'dayofweek', 'dayofweek_iso', 'hour', 'minute', 'second' );
-
-       /**
-        * Constructor.
-        *
-        * Time-related parameters that normally require integer values ('year', 'month', 'week', 'dayofyear', 'day',
-        * 'dayofweek', 'dayofweek_iso', 'hour', 'minute', 'second') accept arrays of integers for some values of
-        * 'compare'. When 'compare' is 'IN' or 'NOT IN', arrays are accepted; when 'compare' is 'BETWEEN' or 'NOT
-        * BETWEEN', arrays of two valid values are required. See individual argument descriptions for accepted values.
-        *
-        * @since 3.7.0
-        * @since 4.0.0 The $inclusive logic was updated to include all times within the date range.
-        * @since 4.1.0 Introduced 'dayofweek_iso' time type parameter.
-        *
-        * @param array $date_query {
-        *     Array of date query clauses.
-        *
-        *     @type array {
-        *         @type string $column   Optional. The column to query against. If undefined, inherits the value of
-        *                                the `$default_column` parameter. Accepts 'post_date', 'post_date_gmt',
-        *                                'post_modified','post_modified_gmt', 'comment_date', 'comment_date_gmt'.
-        *                                Default 'post_date'.
-        *         @type string $compare  Optional. The comparison operator. Accepts '=', '!=', '>', '>=', '<', '<=',
-        *                                'IN', 'NOT IN', 'BETWEEN', 'NOT BETWEEN'. Default '='.
-        *         @type string $relation Optional. The boolean relationship between the date queries. Accepts 'OR' or 'AND'.
-        *                                Default 'OR'.
-        *         @type array {
-        *             Optional. An array of first-order clause parameters, or another fully-formed date query.
-        *
-        *             @type string|array $before {
-        *                 Optional. Date to retrieve posts before. Accepts `strtotime()`-compatible string,
-        *                 or array of 'year', 'month', 'day' values.
-        *
-        *                 @type string $year  The four-digit year. Default empty. Accepts any four-digit year.
-        *                 @type string $month Optional when passing array.The month of the year.
-        *                                     Default (string:empty)|(array:1). Accepts numbers 1-12.
-        *                 @type string $day   Optional when passing array.The day of the month.
-        *                                     Default (string:empty)|(array:1). Accepts numbers 1-31.
-        *             }
-        *             @type string|array $after {
-        *                 Optional. Date to retrieve posts after. Accepts `strtotime()`-compatible string,
-        *                 or array of 'year', 'month', 'day' values.
-        *
-        *                 @type string $year  The four-digit year. Accepts any four-digit year. Default empty.
-        *                 @type string $month Optional when passing array. The month of the year. Accepts numbers 1-12.
-        *                                     Default (string:empty)|(array:12).
-        *                 @type string $day   Optional when passing array.The day of the month. Accepts numbers 1-31.
-        *                                     Default (string:empty)|(array:last day of month).
-        *             }
-        *             @type string       $column        Optional. Used to add a clause comparing a column other than the
-        *                                               column specified in the top-level `$column` parameter. Accepts
-        *                                               'post_date', 'post_date_gmt', 'post_modified', 'post_modified_gmt',
-        *                                               'comment_date', 'comment_date_gmt'. Default is the value of
-        *                                               top-level `$column`.
-        *             @type string       $compare       Optional. The comparison operator. Accepts '=', '!=', '>', '>=',
-        *                                               '<', '<=', 'IN', 'NOT IN', 'BETWEEN', 'NOT BETWEEN'. 'IN',
-        *                                               'NOT IN', 'BETWEEN', and 'NOT BETWEEN'. Comparisons support
-        *                                               arrays in some time-related parameters. Default '='.
-        *             @type bool         $inclusive     Optional. Include results from dates specified in 'before' or
-        *                                               'after'. Default false.
-        *             @type int|array    $year          Optional. The four-digit year number. Accepts any four-digit year
-        *                                               or an array of years if `$compare` supports it. Default empty.
-        *             @type int|array    $month         Optional. The two-digit month number. Accepts numbers 1-12 or an
-        *                                               array of valid numbers if `$compare` supports it. Default empty.
-        *             @type int|array    $week          Optional. The week number of the year. Accepts numbers 0-53 or an
-        *                                               array of valid numbers if `$compare` supports it. Default empty.
-        *             @type int|array    $dayofyear     Optional. The day number of the year. Accepts numbers 1-366 or an
-        *                                               array of valid numbers if `$compare` supports it.
-        *             @type int|array    $day           Optional. The day of the month. Accepts numbers 1-31 or an array
-        *                                               of valid numbers if `$compare` supports it. Default empty.
-        *             @type int|array    $dayofweek     Optional. The day number of the week. Accepts numbers 1-7 (1 is
-        *                                               Sunday) or an array of valid numbers if `$compare` supports it.
-        *                                               Default empty.
-        *             @type int|array    $dayofweek_iso Optional. The day number of the week (ISO). Accepts numbers 1-7
-        *                                               (1 is Monday) or an array of valid numbers if `$compare` supports it.
-        *                                               Default empty.
-        *             @type int|array    $hour          Optional. The hour of the day. Accepts numbers 0-23 or an array
-        *                                               of valid numbers if `$compare` supports it. Default empty.
-        *             @type int|array    $minute        Optional. The minute of the hour. Accepts numbers 0-60 or an array
-        *                                               of valid numbers if `$compare` supports it. Default empty.
-        *             @type int|array    $second        Optional. The second of the minute. Accepts numbers 0-60 or an
-        *                                               array of valid numbers if `$compare` supports it. Default empty.
-        *         }
-        *     }
-        * }
-        * @param string $default_column Optional. Default column to query against. Default 'post_date'.
-        *                               Accepts 'post_date', 'post_date_gmt', 'post_modified', 'post_modified_gmt',
-        *                               'comment_date', 'comment_date_gmt'.
-        */
-       public function __construct( $date_query, $default_column = 'post_date' ) {
-               if ( isset( $date_query['relation'] ) && 'OR' === strtoupper( $date_query['relation'] ) ) {
-                       $this->relation = 'OR';
-               } else {
-                       $this->relation = 'AND';
-               }
-
-               if ( ! is_array( $date_query ) ) {
-                       return;
-               }
-
-               // Support for passing time-based keys in the top level of the $date_query array.
-               if ( ! isset( $date_query[0] ) && ! empty( $date_query ) ) {
-                       $date_query = array( $date_query );
-               }
-
-               if ( empty( $date_query ) ) {
-                       return;
-               }
-
-               if ( ! empty( $date_query['column'] ) ) {
-                       $date_query['column'] = esc_sql( $date_query['column'] );
-               } else {
-                       $date_query['column'] = esc_sql( $default_column );
-               }
-
-               $this->column = $this->validate_column( $this->column );
-
-               $this->compare = $this->get_compare( $date_query );
-
-               $this->queries = $this->sanitize_query( $date_query );
-       }
-
-       /**
-        * Recursive-friendly query sanitizer.
-        *
-        * Ensures that each query-level clause has a 'relation' key, and that
-        * each first-order clause contains all the necessary keys from
-        * `$defaults`.
-        *
-        * @since 4.1.0
-        *
-        * @param array $queries
-        * @param array $parent_query
-        *
-        * @return array Sanitized queries.
-        */
-       public function sanitize_query( $queries, $parent_query = null ) {
-               $cleaned_query = array();
-
-               $defaults = array(
-                       'column'   => 'post_date',
-                       'compare'  => '=',
-                       'relation' => 'AND',
-               );
-
-               // Numeric keys should always have array values.
-               foreach ( $queries as $qkey => $qvalue ) {
-                       if ( is_numeric( $qkey ) && ! is_array( $qvalue ) ) {
-                               unset( $queries[ $qkey ] );
-                       }
-               }
-
-               // Each query should have a value for each default key. Inherit from the parent when possible.
-               foreach ( $defaults as $dkey => $dvalue ) {
-                       if ( isset( $queries[ $dkey ] ) ) {
-                               continue;
-                       }
-
-                       if ( isset( $parent_query[ $dkey ] ) ) {
-                               $queries[ $dkey ] = $parent_query[ $dkey ];
-                       } else {
-                               $queries[ $dkey ] = $dvalue;
-                       }
-               }
-
-               // Validate the dates passed in the query.
-               if ( $this->is_first_order_clause( $queries ) ) {
-                       $this->validate_date_values( $queries );
-               }
-
-               foreach ( $queries as $key => $q ) {
-                       if ( ! is_array( $q ) || in_array( $key, $this->time_keys, true ) ) {
-                               // This is a first-order query. Trust the values and sanitize when building SQL.
-                               $cleaned_query[ $key ] = $q;
-                       } else {
-                               // Any array without a time key is another query, so we recurse.
-                               $cleaned_query[] = $this->sanitize_query( $q, $queries );
-                       }
-               }
-
-               return $cleaned_query;
-       }
-
-       /**
-        * Determine whether this is a first-order clause.
-        *
-        * Checks to see if the current clause has any time-related keys.
-        * If so, it's first-order.
-        *
-        * @since 4.1.0
-        *
-        * @param  array $query Query clause.
-        * @return bool True if this is a first-order clause.
-        */
-       protected function is_first_order_clause( $query ) {
-               $time_keys = array_intersect( $this->time_keys, array_keys( $query ) );
-               return ! empty( $time_keys );
-       }
-
-       /**
-        * Determines and validates what comparison operator to use.
-        *
-        * @since 3.7.0
-        *
-        * @param array $query A date query or a date subquery.
-        * @return string The comparison operator.
-        */
-       public function get_compare( $query ) {
-               if ( ! empty( $query['compare'] ) && in_array( $query['compare'], array( '=', '!=', '>', '>=', '<', '<=', 'IN', 'NOT IN', 'BETWEEN', 'NOT BETWEEN' ) ) ) {
-                       return strtoupper( $query['compare'] );
-               }
-
-               return $this->compare;
-       }
-
-       /**
-        * Validates the given date_query values and triggers errors if something is not valid.
-        *
-        * Note that date queries with invalid date ranges are allowed to
-        * continue (though of course no items will be found for impossible dates).
-        * This method only generates debug notices for these cases.
-        *
-        * @since  4.1.0
-        *
-        * @param  array $date_query The date_query array.
-        * @return bool  True if all values in the query are valid, false if one or more fail.
-        */
-       public function validate_date_values( $date_query = array() ) {
-               if ( empty( $date_query ) ) {
-                       return false;
-               }
-
-               $valid = true;
-
-               /*
-                * Validate 'before' and 'after' up front, then let the
-                * validation routine continue to be sure that all invalid
-                * values generate errors too.
-                */
-               if ( array_key_exists( 'before', $date_query ) && is_array( $date_query['before'] ) ) {
-                       $valid = $this->validate_date_values( $date_query['before'] );
-               }
-
-               if ( array_key_exists( 'after', $date_query ) && is_array( $date_query['after'] ) ) {
-                       $valid = $this->validate_date_values( $date_query['after'] );
-               }
-
-               // Array containing all min-max checks.
-               $min_max_checks = array();
-
-               // Days per year.
-               if ( array_key_exists( 'year', $date_query ) ) {
-                       /*
-                        * If a year exists in the date query, we can use it to get the days.
-                        * If multiple years are provided (as in a BETWEEN), use the first one.
-                        */
-                       if ( is_array( $date_query['year'] ) ) {
-                               $_year = reset( $date_query['year'] );
-                       } else {
-                               $_year = $date_query['year'];
-                       }
-
-                       $max_days_of_year = gmdate( 'z', mktime( 0, 0, 0, 12, 31, $_year ) ) + 1;
-               } else {
-                       // otherwise we use the max of 366 (leap-year)
-                       $max_days_of_year = 366;
-               }
-
-               $min_max_checks['dayofyear'] = array(
-                       'min' => 1,
-                       'max' => $max_days_of_year,
-               );
-
-               // Days per week.
-               $min_max_checks['dayofweek'] = array(
-                       'min' => 1,
-                       'max' => 7,
-               );
-
-               // Days per week.
-               $min_max_checks['dayofweek_iso'] = array(
-                       'min' => 1,
-                       'max' => 7,
-               );
-
-               // Months per year.
-               $min_max_checks['month'] = array(
-                       'min' => 1,
-                       'max' => 12,
-               );
-
-               // Weeks per year.
-               if ( isset( $_year ) ) {
-                       /*
-                        * If we have a specific year, use it to calculate number of weeks.
-                        * Note: the number of weeks in a year is the date in which Dec 28 appears.
-                        */
-                       $week_count = gmdate( 'W', mktime( 0, 0, 0, 12, 28, $_year ) );
-
-               } else {
-                       // Otherwise set the week-count to a maximum of 53.
-                       $week_count = 53;
-               }
-
-               $min_max_checks['week'] = array(
-                       'min' => 1,
-                       'max' => $week_count,
-               );
-
-               // Days per month.
-               $min_max_checks['day'] = array(
-                       'min' => 1,
-                       'max' => 31,
-               );
-
-               // Hours per day.
-               $min_max_checks['hour'] = array(
-                       'min' => 0,
-                       'max' => 23,
-               );
-
-               // Minutes per hour.
-               $min_max_checks['minute'] = array(
-                       'min' => 0,
-                       'max' => 59,
-               );
-
-               // Seconds per minute.
-               $min_max_checks['second'] = array(
-                       'min' => 0,
-                       'max' => 59,
-               );
-
-               // Concatenate and throw a notice for each invalid value.
-               foreach ( $min_max_checks as $key => $check ) {
-                       if ( ! array_key_exists( $key, $date_query ) ) {
-                               continue;
-                       }
-
-                       // Throw a notice for each failing value.
-                       foreach ( (array) $date_query[ $key ] as $_value ) {
-                               $is_between = $_value >= $check['min'] && $_value <= $check['max'];
-
-                               if ( ! is_numeric( $_value ) || ! $is_between ) {
-                                       $error = sprintf(
-                                               /* translators: Date query invalid date message: 1: invalid value, 2: type of value, 3: minimum valid value, 4: maximum valid value */
-                                               __( 'Invalid value %1$s for %2$s. Expected value should be between %3$s and %4$s.' ),
-                                               '<code>' . esc_html( $_value ) . '</code>',
-                                               '<code>' . esc_html( $key ) . '</code>',
-                                               '<code>' . esc_html( $check['min'] ) . '</code>',
-                                               '<code>' . esc_html( $check['max'] ) . '</code>'
-                                       );
-
-                                       _doing_it_wrong( __CLASS__, $error, '4.1.0' );
-
-                                       $valid = false;
-                               }
-                       }
-               }
-
-               // If we already have invalid date messages, don't bother running through checkdate().
-               if ( ! $valid ) {
-                       return $valid;
-               }
-
-               $day_month_year_error_msg = '';
-
-               $day_exists   = array_key_exists( 'day', $date_query ) && is_numeric( $date_query['day'] );
-               $month_exists = array_key_exists( 'month', $date_query ) && is_numeric( $date_query['month'] );
-               $year_exists  = array_key_exists( 'year', $date_query ) && is_numeric( $date_query['year'] );
-
-               if ( $day_exists && $month_exists && $year_exists ) {
-                       // 1. Checking day, month, year combination.
-                       if ( ! wp_checkdate( $date_query['month'], $date_query['day'], $date_query['year'], sprintf( '%s-%s-%s', $date_query['year'], $date_query['month'], $date_query['day'] ) ) ) {
-                               /* translators: 1: year, 2: month, 3: day of month */
-                               $day_month_year_error_msg = sprintf(
-                                       __( 'The following values do not describe a valid date: year %1$s, month %2$s, day %3$s.' ),
-                                       '<code>' . esc_html( $date_query['year'] ) . '</code>',
-                                       '<code>' . esc_html( $date_query['month'] ) . '</code>',
-                                       '<code>' . esc_html( $date_query['day'] ) . '</code>'
-                               );
-
-                               $valid = false;
-                       }
-               } elseif ( $day_exists && $month_exists ) {
-                       /*
-                        * 2. checking day, month combination
-                        * We use 2012 because, as a leap year, it's the most permissive.
-                        */
-                       if ( ! wp_checkdate( $date_query['month'], $date_query['day'], 2012, sprintf( '2012-%s-%s', $date_query['month'], $date_query['day'] ) ) ) {
-                               /* translators: 1: month, 2: day of month */
-                               $day_month_year_error_msg = sprintf(
-                                       __( 'The following values do not describe a valid date: month %1$s, day %2$s.' ),
-                                       '<code>' . esc_html( $date_query['month'] ) . '</code>',
-                                       '<code>' . esc_html( $date_query['day'] ) . '</code>'
-                               );
-
-                               $valid = false;
-                       }
-               }
-
-               if ( ! empty( $day_month_year_error_msg ) ) {
-                       _doing_it_wrong( __CLASS__, $day_month_year_error_msg, '4.1.0' );
-               }
-
-               return $valid;
-       }
-
-       /**
-        * Validates a column name parameter.
-        *
-        * Column names without a table prefix (like 'post_date') are checked against a whitelist of
-        * known tables, and then, if found, have a table prefix (such as 'wp_posts.') prepended.
-        * Prefixed column names (such as 'wp_posts.post_date') bypass this whitelist check,
-        * and are only sanitized to remove illegal characters.
-        *
-        * @since 3.7.0
-        *
-        * @param string $column The user-supplied column name.
-        * @return string A validated column name value.
-        */
-       public function validate_column( $column ) {
-               global $wpdb;
-
-               $valid_columns = array(
-                       'post_date',
-                       'post_date_gmt',
-                       'post_modified',
-                       'post_modified_gmt',
-                       'comment_date',
-                       'comment_date_gmt',
-                       'user_registered',
-                       'registered',
-                       'last_updated',
-               );
-
-               // Attempt to detect a table prefix.
-               if ( false === strpos( $column, '.' ) ) {
-                       /**
-                        * Filters the list of valid date query columns.
-                        *
-                        * @since 3.7.0
-                        * @since 4.1.0 Added 'user_registered' to the default recognized columns.
-                        *
-                        * @param string[] $valid_columns An array of valid date query columns. Defaults
-                        *                                are 'post_date', 'post_date_gmt', 'post_modified',
-                        *                                'post_modified_gmt', 'comment_date', 'comment_date_gmt',
-                        *                                'user_registered'
-                        */
-                       if ( ! in_array( $column, apply_filters( 'date_query_valid_columns', $valid_columns ) ) ) {
-                               $column = 'post_date';
-                       }
-
-                       $known_columns = array(
-                               $wpdb->posts    => array(
-                                       'post_date',
-                                       'post_date_gmt',
-                                       'post_modified',
-                                       'post_modified_gmt',
-                               ),
-                               $wpdb->comments => array(
-                                       'comment_date',
-                                       'comment_date_gmt',
-                               ),
-                               $wpdb->users    => array(
-                                       'user_registered',
-                               ),
-                               $wpdb->blogs    => array(
-                                       'registered',
-                                       'last_updated',
-                               ),
-                       );
-
-                       // If it's a known column name, add the appropriate table prefix.
-                       foreach ( $known_columns as $table_name => $table_columns ) {
-                               if ( in_array( $column, $table_columns ) ) {
-                                       $column = $table_name . '.' . $column;
-                                       break;
-                               }
-                       }
-               }
-
-               // Remove unsafe characters.
-               return preg_replace( '/[^a-zA-Z0-9_$\.]/', '', $column );
-       }
-
-       /**
-        * Generate WHERE clause to be appended to a main query.
-        *
-        * @since 3.7.0
-        *
-        * @return string MySQL WHERE clause.
-        */
-       public function get_sql() {
-               $sql = $this->get_sql_clauses();
-
-               $where = $sql['where'];
-
-               /**
-                * Filters the date query WHERE clause.
-                *
-                * @since 3.7.0
-                *
-                * @param string        $where WHERE clause of the date query.
-                * @param WP_Date_Query $this  The WP_Date_Query instance.
-                */
-               return apply_filters( 'get_date_sql', $where, $this );
-       }
-
-       /**
-        * Generate SQL clauses to be appended to a main query.
-        *
-        * Called by the public WP_Date_Query::get_sql(), this method is abstracted
-        * out to maintain parity with the other Query classes.
-        *
-        * @since 4.1.0
-        *
-        * @return array {
-        *     Array containing JOIN and WHERE SQL clauses to append to the main query.
-        *
-        *     @type string $join  SQL fragment to append to the main JOIN clause.
-        *     @type string $where SQL fragment to append to the main WHERE clause.
-        * }
-        */
-       protected function get_sql_clauses() {
-               $sql = $this->get_sql_for_query( $this->queries );
-
-               if ( ! empty( $sql['where'] ) ) {
-                       $sql['where'] = ' AND ' . $sql['where'];
-               }
-
-               return $sql;
-       }
-
-       /**
-        * Generate SQL clauses for a single query array.
-        *
-        * If nested subqueries are found, this method recurses the tree to
-        * produce the properly nested SQL.
-        *
-        * @since 4.1.0
-        *
-        * @param array $query Query to parse.
-        * @param int   $depth Optional. Number of tree levels deep we currently are.
-        *                     Used to calculate indentation. Default 0.
-        * @return array {
-        *     Array containing JOIN and WHERE SQL clauses to append to a single query array.
-        *
-        *     @type string $join  SQL fragment to append to the main JOIN clause.
-        *     @type string $where SQL fragment to append to the main WHERE clause.
-        * }
-        */
-       protected function get_sql_for_query( $query, $depth = 0 ) {
-               $sql_chunks = array(
-                       'join'  => array(),
-                       'where' => array(),
-               );
-
-               $sql = array(
-                       'join'  => '',
-                       'where' => '',
-               );
-
-               $indent = '';
-               for ( $i = 0; $i < $depth; $i++ ) {
-                       $indent .= '  ';
-               }
-
-               foreach ( $query as $key => $clause ) {
-                       if ( 'relation' === $key ) {
-                               $relation = $query['relation'];
-                       } elseif ( is_array( $clause ) ) {
-
-                               // This is a first-order clause.
-                               if ( $this->is_first_order_clause( $clause ) ) {
-                                       $clause_sql = $this->get_sql_for_clause( $clause, $query );
-
-                                       $where_count = count( $clause_sql['where'] );
-                                       if ( ! $where_count ) {
-                                               $sql_chunks['where'][] = '';
-                                       } elseif ( 1 === $where_count ) {
-                                               $sql_chunks['where'][] = $clause_sql['where'][0];
-                                       } else {
-                                               $sql_chunks['where'][] = '( ' . implode( ' AND ', $clause_sql['where'] ) . ' )';
-                                       }
-
-                                       $sql_chunks['join'] = array_merge( $sql_chunks['join'], $clause_sql['join'] );
-                                       // This is a subquery, so we recurse.
-                               } else {
-                                       $clause_sql = $this->get_sql_for_query( $clause, $depth + 1 );
-
-                                       $sql_chunks['where'][] = $clause_sql['where'];
-                                       $sql_chunks['join'][]  = $clause_sql['join'];
-                               }
-                       }
-               }
-
-               // Filter to remove empties.
-               $sql_chunks['join']  = array_filter( $sql_chunks['join'] );
-               $sql_chunks['where'] = array_filter( $sql_chunks['where'] );
-
-               if ( empty( $relation ) ) {
-                       $relation = 'AND';
-               }
-
-               // Filter duplicate JOIN clauses and combine into a single string.
-               if ( ! empty( $sql_chunks['join'] ) ) {
-                       $sql['join'] = implode( ' ', array_unique( $sql_chunks['join'] ) );
-               }
-
-               // Generate a single WHERE clause with proper brackets and indentation.
-               if ( ! empty( $sql_chunks['where'] ) ) {
-                       $sql['where'] = '( ' . "\n  " . $indent . implode( ' ' . "\n  " . $indent . $relation . ' ' . "\n  " . $indent, $sql_chunks['where'] ) . "\n" . $indent . ')';
-               }
-
-               return $sql;
-       }
-
-       /**
-        * Turns a single date clause into pieces for a WHERE clause.
-        *
-        * A wrapper for get_sql_for_clause(), included here for backward
-        * compatibility while retaining the naming convention across Query classes.
-        *
-        * @since  3.7.0
-        *
-        * @param  array $query Date query arguments.
-        * @return array {
-        *     Array containing JOIN and WHERE SQL clauses to append to the main query.
-        *
-        *     @type string $join  SQL fragment to append to the main JOIN clause.
-        *     @type string $where SQL fragment to append to the main WHERE clause.
-        * }
-        */
-       protected function get_sql_for_subquery( $query ) {
-               return $this->get_sql_for_clause( $query, '' );
-       }
-
-       /**
-        * Turns a first-order date query into SQL for a WHERE clause.
-        *
-        * @since  4.1.0
-        *
-        * @param  array $query        Date query clause.
-        * @param  array $parent_query Parent query of the current date query.
-        * @return array {
-        *     Array containing JOIN and WHERE SQL clauses to append to the main query.
-        *
-        *     @type string $join  SQL fragment to append to the main JOIN clause.
-        *     @type string $where SQL fragment to append to the main WHERE clause.
-        * }
-        */
-       protected function get_sql_for_clause( $query, $parent_query ) {
-               global $wpdb;
-
-               // The sub-parts of a $where part.
-               $where_parts = array();
-
-               $column = ( ! empty( $query['column'] ) ) ? esc_sql( $query['column'] ) : $this->column;
-
-               $column = $this->validate_column( $column );
-
-               $compare = $this->get_compare( $query );
-
-               $inclusive = ! empty( $query['inclusive'] );
-
-               // Assign greater- and less-than values.
-               $lt = '<';
-               $gt = '>';
-
-               if ( $inclusive ) {
-                       $lt .= '=';
-                       $gt .= '=';
-               }
-
-               // Range queries.
-               if ( ! empty( $query['after'] ) ) {
-                       $where_parts[] = $wpdb->prepare( "$column $gt %s", $this->build_mysql_datetime( $query['after'], ! $inclusive ) );
-               }
-               if ( ! empty( $query['before'] ) ) {
-                       $where_parts[] = $wpdb->prepare( "$column $lt %s", $this->build_mysql_datetime( $query['before'], $inclusive ) );
-               }
-               // Specific value queries.
-
-               $date_units = array(
-                       'YEAR'           => array( 'year' ),
-                       'MONTH'          => array( 'month', 'monthnum' ),
-                       '_wp_mysql_week' => array( 'week', 'w' ),
-                       'DAYOFYEAR'      => array( 'dayofyear' ),
-                       'DAYOFMONTH'     => array( 'day' ),
-                       'DAYOFWEEK'      => array( 'dayofweek' ),
-                       'WEEKDAY'        => array( 'dayofweek_iso' ),
-               );
-
-               // Check of the possible date units and add them to the query
-               foreach ( $date_units as $sql_part => $query_parts ) {
-                       foreach ( $query_parts as $query_part ) {
-                               if ( isset( $query[ $query_part ] ) ) {
-                                       $value = $this->build_value( $compare, $query[ $query_part ] );
-                                       if ( $value ) {
-                                               switch ( $sql_part ) {
-                                                       case '_wp_mysql_week':
-                                                               $where_parts[] = _wp_mysql_week( $column ) . " $compare $value";
-                                                               break;
-                                                       case 'WEEKDAY':
-                                                               $where_parts[] = "$sql_part( $column ) + 1 $compare $value";
-                                                               break;
-                                                       default:
-                                                               $where_parts[] = "$sql_part( $column ) $compare $value";
-                                               }
-
-                                               break;
-                                       }
-                               }
-                       }
-               }
-
-               if ( isset( $query['hour'] ) || isset( $query['minute'] ) || isset( $query['second'] ) ) {
-                       // Avoid notices.
-                       foreach ( array( 'hour', 'minute', 'second' ) as $unit ) {
-                               if ( ! isset( $query[ $unit ] ) ) {
-                                       $query[ $unit ] = null;
-                               }
-                       }
-
-                       $time_query = $this->build_time_query( $column, $compare, $query['hour'], $query['minute'], $query['second'] );
-                       if ( $time_query ) {
-                               $where_parts[] = $time_query;
-                       }
-               }
-
-               /*
-                * Return an array of 'join' and 'where' for compatibility
-                * with other query classes.
-                */
-               return array(
-                       'where' => $where_parts,
-                       'join'  => array(),
-               );
-       }
-
-       /**
-        * Builds and validates a value string based on the comparison operator.
-        *
-        * @since 3.7.0
-        *
-        * @param string $compare The compare operator to use
-        * @param string|array $value The value
-        * @return string|false|int The value to be used in SQL or false on error.
-        */
-       public function build_value( $compare, $value ) {
-               if ( ! isset( $value ) ) {
-                       return false;
-               }
-
-               switch ( $compare ) {
-                       case 'IN':
-                       case 'NOT IN':
-                               $value = (array) $value;
-
-                               // Remove non-numeric values.
-                               $value = array_filter( $value, 'is_numeric' );
-
-                               if ( empty( $value ) ) {
-                                       return false;
-                               }
-
-                               return '(' . implode( ',', array_map( 'intval', $value ) ) . ')';
-
-                       case 'BETWEEN':
-                       case 'NOT BETWEEN':
-                               if ( ! is_array( $value ) || 2 != count( $value ) ) {
-                                       $value = array( $value, $value );
-                               } else {
-                                       $value = array_values( $value );
-                               }
-
-                               // If either value is non-numeric, bail.
-                               foreach ( $value as $v ) {
-                                       if ( ! is_numeric( $v ) ) {
-                                               return false;
-                                       }
-                               }
-
-                               $value = array_map( 'intval', $value );
-
-                               return $value[0] . ' AND ' . $value[1];
-
-                       default:
-                               if ( ! is_numeric( $value ) ) {
-                                       return false;
-                               }
-
-                               return (int) $value;
-               }
-       }
-
-       /**
-        * Builds a MySQL format date/time based on some query parameters.
-        *
-        * You can pass an array of values (year, month, etc.) with missing parameter values being defaulted to
-        * either the maximum or minimum values (controlled by the $default_to parameter). Alternatively you can
-        * pass a string that will be run through strtotime().
-        *
-        * @since 3.7.0
-        *
-        * @param string|array $datetime       An array of parameters or a strotime() string
-        * @param bool         $default_to_max Whether to round up incomplete dates. Supported by values
-        *                                     of $datetime that are arrays, or string values that are a
-        *                                     subset of MySQL date format ('Y', 'Y-m', 'Y-m-d', 'Y-m-d H:i').
-        *                                     Default: false.
-        * @return string|false A MySQL format date/time or false on failure
-        */
-       public function build_mysql_datetime( $datetime, $default_to_max = false ) {
-               $now = current_time( 'timestamp' );
-
-               if ( ! is_array( $datetime ) ) {
-
-                       /*
-                        * Try to parse some common date formats, so we can detect
-                        * the level of precision and support the 'inclusive' parameter.
-                        */
-                       if ( preg_match( '/^(\d{4})$/', $datetime, $matches ) ) {
-                               // Y
-                               $datetime = array(
-                                       'year' => intval( $matches[1] ),
-                               );
-
-                       } elseif ( preg_match( '/^(\d{4})\-(\d{2})$/', $datetime, $matches ) ) {
-                               // Y-m
-                               $datetime = array(
-                                       'year'  => intval( $matches[1] ),
-                                       'month' => intval( $matches[2] ),
-                               );
-
-                       } elseif ( preg_match( '/^(\d{4})\-(\d{2})\-(\d{2})$/', $datetime, $matches ) ) {
-                               // Y-m-d
-                               $datetime = array(
-                                       'year'  => intval( $matches[1] ),
-                                       'month' => intval( $matches[2] ),
-                                       'day'   => intval( $matches[3] ),
-                               );
-
-                       } elseif ( preg_match( '/^(\d{4})\-(\d{2})\-(\d{2}) (\d{2}):(\d{2})$/', $datetime, $matches ) ) {
-                               // Y-m-d H:i
-                               $datetime = array(
-                                       'year'   => intval( $matches[1] ),
-                                       'month'  => intval( $matches[2] ),
-                                       'day'    => intval( $matches[3] ),
-                                       'hour'   => intval( $matches[4] ),
-                                       'minute' => intval( $matches[5] ),
-                               );
-                       }
-
-                       // If no match is found, we don't support default_to_max.
-                       if ( ! is_array( $datetime ) ) {
-                               // @todo Timezone issues here possibly
-                               return gmdate( 'Y-m-d H:i:s', strtotime( $datetime, $now ) );
-                       }
-               }
-
-               $datetime = array_map( 'absint', $datetime );
-
-               if ( ! isset( $datetime['year'] ) ) {
-                       $datetime['year'] = gmdate( 'Y', $now );
-               }
-
-               if ( ! isset( $datetime['month'] ) ) {
-                       $datetime['month'] = ( $default_to_max ) ? 12 : 1;
-               }
-
-               if ( ! isset( $datetime['day'] ) ) {
-                       $datetime['day'] = ( $default_to_max ) ? (int) gmdate( 't', mktime( 0, 0, 0, $datetime['month'], 1, $datetime['year'] ) ) : 1;
-               }
-
-               if ( ! isset( $datetime['hour'] ) ) {
-                       $datetime['hour'] = ( $default_to_max ) ? 23 : 0;
-               }
-
-               if ( ! isset( $datetime['minute'] ) ) {
-                       $datetime['minute'] = ( $default_to_max ) ? 59 : 0;
-               }
-
-               if ( ! isset( $datetime['second'] ) ) {
-                       $datetime['second'] = ( $default_to_max ) ? 59 : 0;
-               }
-
-               return sprintf( '%04d-%02d-%02d %02d:%02d:%02d', $datetime['year'], $datetime['month'], $datetime['day'], $datetime['hour'], $datetime['minute'], $datetime['second'] );
-       }
-
-       /**
-        * Builds a query string for comparing time values (hour, minute, second).
-        *
-        * If just hour, minute, or second is set than a normal comparison will be done.
-        * However if multiple values are passed, a pseudo-decimal time will be created
-        * in order to be able to accurately compare against.
-        *
-        * @since 3.7.0
-        *
-        * @param string $column The column to query against. Needs to be pre-validated!
-        * @param string $compare The comparison operator. Needs to be pre-validated!
-        * @param int|null $hour Optional. An hour value (0-23).
-        * @param int|null $minute Optional. A minute value (0-59).
-        * @param int|null $second Optional. A second value (0-59).
-        * @return string|false A query part or false on failure.
-        */
-       public function build_time_query( $column, $compare, $hour = null, $minute = null, $second = null ) {
-               global $wpdb;
-
-               // Have to have at least one
-               if ( ! isset( $hour ) && ! isset( $minute ) && ! isset( $second ) ) {
-                       return false;
-               }
-
-               // Complex combined queries aren't supported for multi-value queries
-               if ( in_array( $compare, array( 'IN', 'NOT IN', 'BETWEEN', 'NOT BETWEEN' ) ) ) {
-                       $return = array();
-
-                       $value = $this->build_value( $compare, $hour );
-                       if ( false !== $value ) {
-                               $return[] = "HOUR( $column ) $compare $value";
-                       }
-
-                       $value = $this->build_value( $compare, $minute );
-                       if ( false !== $value ) {
-                               $return[] = "MINUTE( $column ) $compare $value";
-                       }
-
-                       $value = $this->build_value( $compare, $second );
-                       if ( false !== $value ) {
-                               $return[] = "SECOND( $column ) $compare $value";
-                       }
-
-                       return implode( ' AND ', $return );
-               }
-
-               // Cases where just one unit is set
-               if ( isset( $hour ) && ! isset( $minute ) && ! isset( $second ) ) {
-                       $value = $this->build_value( $compare, $hour );
-                       if ( false !== $value ) {
-                               return "HOUR( $column ) $compare $value";
-                       }
-               } elseif ( ! isset( $hour ) && isset( $minute ) && ! isset( $second ) ) {
-                       $value = $this->build_value( $compare, $minute );
-                       if ( false !== $value ) {
-                               return "MINUTE( $column ) $compare $value";
-                       }
-               } elseif ( ! isset( $hour ) && ! isset( $minute ) && isset( $second ) ) {
-                       $value = $this->build_value( $compare, $second );
-                       if ( false !== $value ) {
-                               return "SECOND( $column ) $compare $value";
-                       }
-               }
-
-               // Single units were already handled. Since hour & second isn't allowed, minute must to be set.
-               if ( ! isset( $minute ) ) {
-                       return false;
-               }
-
-               $format = '';
-               $time   = '';
-
-               // Hour
-               if ( null !== $hour ) {
-                       $format .= '%H.';
-                       $time   .= sprintf( '%02d', $hour ) . '.';
-               } else {
-                       $format .= '0.';
-                       $time   .= '0.';
-               }
-
-               // Minute
-               $format .= '%i';
-               $time   .= sprintf( '%02d', $minute );
-
-               if ( isset( $second ) ) {
-                       $format .= '%s';
-                       $time   .= sprintf( '%02d', $second );
-               }
-
-               return $wpdb->prepare( "DATE_FORMAT( $column, %s ) $compare %f", $format, $time );
-       }
-}
</del></span></pre></div>
<a id="trunksrcwpincludesdatephp"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: trunk/src/wp-includes/date.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/date.php                            (rev 0)
+++ trunk/src/wp-includes/date.php      2019-07-25 23:30:21 UTC (rev 45678)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -0,0 +1,14 @@
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+<?php
+/**
+ * Class for generating SQL clauses that filter a primary query according to date.
+ *
+ * This file is deprecated, use 'wp-includes/class-wp-date-query.php' instead.
+ *
+ * @deprecated 5.3.0
+ * @package WordPress
+ */
+
+_deprecated_file( basename( __FILE__ ), '5.3.0', 'wp-includes/class-wp-date-query.php' );
+
+/** WP_Date_Query class */
+require_once( ABSPATH . 'wp-includes/class-wp-date-query.php' );
</ins></span></pre></div>
<a id="trunksrcwpsettingsphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-settings.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-settings.php 2019-07-25 22:55:36 UTC (rev 45677)
+++ trunk/src/wp-settings.php   2019-07-25 23:30:21 UTC (rev 45678)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -159,7 +159,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> require( ABSPATH . WPINC . '/class-wp-user.php' );
</span><span class="cx" style="display: block; padding: 0 10px"> require( ABSPATH . WPINC . '/class-wp-query.php' );
</span><span class="cx" style="display: block; padding: 0 10px"> require( ABSPATH . WPINC . '/query.php' );
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-require( ABSPATH . WPINC . '/date.php' );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+require( ABSPATH . WPINC . '/class-wp-date-query.php' );
</ins><span class="cx" style="display: block; padding: 0 10px"> require( ABSPATH . WPINC . '/theme.php' );
</span><span class="cx" style="display: block; padding: 0 10px"> require( ABSPATH . WPINC . '/class-wp-theme.php' );
</span><span class="cx" style="display: block; padding: 0 10px"> require( ABSPATH . WPINC . '/template.php' );
</span></span></pre>
</div>
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