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<title>[54773] Query: Don't attempt caching if running a WP_User_Query before plugins_loaded.</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/54773">54773</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/54773","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>peterwilsoncc</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2022-11-09 01:59:44 +0000 (Wed, 09 Nov 2022)</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'>Query: Don't attempt caching if running a WP_User_Query before plugins_loaded.

In <a href="https://core.trac.wordpress.org/ticket/55594">#55594</a> user meta caching was enabled by default when making a `WP_User_Query`. Previously, this was only enabled if a developer specifically queried for 'all_with_meta' 
fields. User meta caching is implemented using a pluggable function, `cache_users`. If a plugin runs a `WP_User_Query` before pluggable functions have been defined, this 
will now cause a fatal error.

In this commit, a `function_exists` check is introduced to avoid calling `cache_users` if it's not defined. Additionally, a `_doing_it_wrong` notice is issued if the 
`WP_User_Query::query` method is called before the 'plugins_loaded' hook.

Props carazo, subrataemfluence, oakesjosh, spacedmonkey, obenland, SergeyBiryukov, peterwilsoncc, TimothyBlynJacobs.
Merges <a href="https://core.trac.wordpress.org/changeset/54766">[54766]</a> to the 6.1 branch.
Fixes <a href="https://core.trac.wordpress.org/ticket/56952">#56952</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#branches61srcwpincludesclasswpuserqueryphp">branches/6.1/src/wp-includes/class-wp-user-query.php</a></li>
</ul>

<h3>Property Changed</h3>
<ul>
<li><a href="#branches61">branches/6.1/</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<span class="cx" style="display: block; padding: 0 10px">Index: branches/6.1
</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/6.1 2022-11-09 01:06:46 UTC (rev 54772)
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+++ branches/6.1  2022-11-09 01:59:44 UTC (rev 54773)
</ins><a id="branches61"></a>
<div class="propset"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Property changes: branches/6.1</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/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><span class="cx" style="display: block; padding: 0 10px"> /branches/5.5:49373-49379,49381
</span><span class="cx" style="display: block; padding: 0 10px"> /branches/5.8:51889
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-/trunk:54645-54646,54649,54652,54660,54662,54669,54674,54678,54686,54690,54693,54698,54706,54724,54729-54730,54733,54745,54751,54769
</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:54645-54646,54649,54652,54660,54662,54669,54674,54678,54686,54690,54693,54698,54706,54724,54729-54730,54733,54745,54751,54766,54769
</ins><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span><a id="branches61srcwpincludesclasswpuserqueryphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/6.1/src/wp-includes/class-wp-user-query.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/6.1/src/wp-includes/class-wp-user-query.php      2022-11-09 01:06:46 UTC (rev 54772)
+++ branches/6.1/src/wp-includes/class-wp-user-query.php        2022-11-09 01:59:44 UTC (rev 54773)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -776,6 +776,18 @@
</span><span class="cx" style="display: block; padding: 0 10px">        public function query() {
</span><span class="cx" style="display: block; padding: 0 10px">                global $wpdb;
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                if ( ! did_action( 'plugins_loaded' ) ) {
+                       _doing_it_wrong(
+                               'WP_User_Query::query',
+                               sprintf(
+                               /* translators: %s: plugins_loaded */
+                                       __( 'User queries should not be run before the %s hook.' ),
+                                       '<code>plugins_loaded</code>'
+                               ),
+                               '6.1.1'
+                       );
+               }
+
</ins><span class="cx" style="display: block; padding: 0 10px">                 $qv =& $this->query_vars;
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                /**
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -840,7 +852,9 @@
</span><span class="cx" style="display: block; padding: 0 10px">                                $result->id = $result->ID;
</span><span class="cx" style="display: block; padding: 0 10px">                        }
</span><span class="cx" style="display: block; padding: 0 10px">                } elseif ( 'all_with_meta' === $qv['fields'] || 'all' === $qv['fields'] ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        cache_users( $this->results );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 if ( function_exists( 'cache_users' ) ) {
+                               cache_users( $this->results );
+                       }
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                        $r = array();
</span><span class="cx" style="display: block; padding: 0 10px">                        foreach ( $this->results as $userid ) {
</span></span></pre>
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