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<title>[46796] branches/5.3/tests/phpunit/tests/date/getPermalink.php: Date/Time: Make `get_permalink()` more resilient against PHP timezone changes.</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/46796">46796</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/46796","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>2019-11-28 13:55:22 +0000 (Thu, 28 Nov 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'>Date/Time: Make `get_permalink()` more resilient against PHP timezone changes.

Overriding default PHP timezone with `date_default_timezone_set()`, while not recommended, should not inadvertently result in changing existing permalinks.

Add a unit test.

Props Rarst, steevithak, archon810, maciejmackowiak, Ov3rfly, Cybr, hometowntrailers, scvleon, miette49.
Merges <a href="https://core.trac.wordpress.org/changeset/46795">[46795]</a> to the 5.3 branch.
Fixes <a href="https://core.trac.wordpress.org/ticket/48623">#48623</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#branches53srcwpincludeslinktemplatephp">branches/5.3/src/wp-includes/link-template.php</a></li>
</ul>

<h3>Added Paths</h3>
<ul>
<li><a href="#branches53testsphpunittestsdategetPermalinkphp">branches/5.3/tests/phpunit/tests/date/getPermalink.php</a></li>
</ul>

<h3>Property Changed</h3>
<ul>
<li><a href="#branches53">branches/5.3/</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<span class="cx" style="display: block; padding: 0 10px">Index: branches/5.3
</span><span class="cx" style="display: block; padding: 0 10px">===================================================================
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">--- branches/5.3 2019-11-28 13:40:19 UTC (rev 46795)
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+++ branches/5.3  2019-11-28 13:55:22 UTC (rev 46796)
</ins><a id="branches53"></a>
<div class="propset"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Property changes: branches/5.3</h4>
<pre class="diff"><span>
</span></pre></div>
<a id="svnmergeinfo"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: svn:mergeinfo</h4></div>
<span class="cx" style="display: block; padding: 0 10px"> /branches/3.4:21757
</span><span class="cx" style="display: block; padding: 0 10px"> /branches/4.9:43557,43622
</span><span class="cx" style="display: block; padding: 0 10px"> /branches/5.0:43681-43682,43684-43688,43719-43720,43723,43726-43727,43729-43731,43734-43744,43747,43751-43754,43758,43760-43765,43767-43770,43772,43774-43781,43783,43785,43790-43806,43808-43821,43825,43828,43830-43834,43836-43843,43846-43863,43867-43889,43891-43894,43897-43905,43908-43909,43911-43929,43931-43942,43946-43947,43949-43956,43959-43964,43967-43969,43988,43994,44014,44017,44047,44183,44185,44187-44206,44208-44213,44231-44232,44235,44248,44284,44287-44288
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-/trunk:46583,46605-46606,46613,46616,46656,46658,46665,46668,46676-46677,46700-46703,46705,46707,46709,46711,46713,46715,46719-46720,46722,46724,46738,46745-46748,46753,46756-46758,46761-46762,46765,46770,46772,46779,46782,46786,46788,46793
</del><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+/trunk:46583,46605-46606,46613,46616,46656,46658,46665,46668,46676-46677,46700-46703,46705,46707,46709,46711,46713,46715,46719-46720,46722,46724,46738,46745-46748,46753,46756-46758,46761-46762,46765,46770,46772,46779,46782,46786,46788,46793,46795
</ins><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span><a id="branches53srcwpincludeslinktemplatephp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/5.3/src/wp-includes/link-template.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.3/src/wp-includes/link-template.php    2019-11-28 13:40:19 UTC (rev 46795)
+++ branches/5.3/src/wp-includes/link-template.php      2019-11-28 13:55:22 UTC (rev 46796)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -166,7 +166,6 @@
</span><span class="cx" style="display: block; padding: 0 10px">        $permalink = apply_filters( 'pre_post_link', $permalink, $post, $leavename );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        if ( '' != $permalink && ! in_array( $post->post_status, array( 'draft', 'pending', 'auto-draft', 'future' ) ) ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                $unixtime = strtotime( $post->post_date );
</del><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                $category = '';
</span><span class="cx" style="display: block; padding: 0 10px">                if ( strpos( $permalink, '%category%' ) !== false ) {
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -212,9 +211,11 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        $author     = $authordata->user_nicename;
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                $date           = explode( ' ', gmdate( 'Y m d H i s', $unixtime ) );
-               $rewritereplace =
-               array(
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         // This is not an API call because the permalink is based on the stored post_date value,
+               // which should be parsed as local time regardless of the default PHP timezone.
+               $date = explode( ' ', str_replace( array( '-', ':' ), ' ', $post->post_date ) );
+
+               $rewritereplace = array(
</ins><span class="cx" style="display: block; padding: 0 10px">                         $date[0],
</span><span class="cx" style="display: block; padding: 0 10px">                        $date[1],
</span><span class="cx" style="display: block; padding: 0 10px">                        $date[2],
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -227,8 +228,10 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        $author,
</span><span class="cx" style="display: block; padding: 0 10px">                        $post->post_name,
</span><span class="cx" style="display: block; padding: 0 10px">                );
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                $permalink      = home_url( str_replace( $rewritecode, $rewritereplace, $permalink ) );
-               $permalink      = user_trailingslashit( $permalink, 'single' );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+               $permalink = home_url( str_replace( $rewritecode, $rewritereplace, $permalink ) );
+               $permalink = user_trailingslashit( $permalink, 'single' );
+
</ins><span class="cx" style="display: block; padding: 0 10px">         } else { // if they're not using the fancy permalink option
</span><span class="cx" style="display: block; padding: 0 10px">                $permalink = home_url( '?p=' . $post->ID );
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span></span></pre></div>
<a id="branches53testsphpunittestsdategetPermalinkphpfromrev46795trunktestsphpunittestsdategetPermalinkphp"></a>
<div class="copfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Copied: branches/5.3/tests/phpunit/tests/date/getPermalink.php (from rev 46795, trunk/tests/phpunit/tests/date/getPermalink.php)</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.3/tests/phpunit/tests/date/getPermalink.php                            (rev 0)
+++ branches/5.3/tests/phpunit/tests/date/getPermalink.php      2019-11-28 13:55:22 UTC (rev 46796)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -0,0 +1,39 @@
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+<?php
+
+/**
+ * @group date
+ * @group datetime
+ * @group post
+ */
+class Tests_Date_Get_Permalink extends WP_UnitTestCase {
+
+       function tearDown() {
+               delete_option( 'permalink_structure' );
+               update_option( 'timezone_string', 'UTC' );
+               date_default_timezone_set( 'UTC' );
+
+               parent::tearDown();
+       }
+
+       /**
+        * @ticket 48623
+        */
+       public function test_should_return_correct_date_permalink_with_changed_time_zone() {
+               $timezone = 'America/Chicago';
+               update_option( 'timezone_string', $timezone );
+               update_option( 'permalink_structure', '/%year%/%monthnum%/%day%/%hour%/%minute%/%second%' );
+               date_default_timezone_set( 'UTC' );
+
+               $post_id = self::factory()->post->create(
+                       array(
+                               'post_date'     => '2018-07-22 21:13:23',
+                               'post_date_gmt' => '2018-07-23 03:13:23',
+                       )
+               );
+
+               $this->assertEquals( 'http://example.org/2018/07/22/21/13/23', get_permalink( $post_id ) );
+
+               date_default_timezone_set( $timezone );
+               $this->assertEquals( 'http://example.org/2018/07/22/21/13/23', get_permalink( $post_id ) );
+       }
+}
</ins></span></pre>
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