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<title>[53004] trunk/src/wp-settings.php: Plugins: Avoid stomping of some variables in `wp-settings.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/53004">53004</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/53004","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>audrasjb</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2022-03-28 13:57:08 +0000 (Mon, 28 Mar 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'>Plugins: Avoid stomping of some variables in `wp-settings.php`.
This changeset decreases the chance of accidentally overwriting some variables located in `wp-settings.php`, as the chance of overriding a variable called `$_wp_plugin_file` would be lower than for `$plugin`, `$mu_plugin` or `$network_plugin`.
Props stevegrunwell, joyously, peterwilsoncc, ocean90, SergeyBiryukov, jrf, azouamauriac.
Fixes <a href="https://core.trac.wordpress.org/ticket/55432">#55432</a>.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpsettingsphp">trunk/src/wp-settings.php</a></li>
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<h3>Diff</h3>
<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 2022-03-28 13:22:38 UTC (rev 53003)
+++ trunk/src/wp-settings.php 2022-03-28 13:57:08 UTC (rev 53004)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -346,7 +346,9 @@
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> // Load must-use plugins.
</span><span class="cx" style="display: block; padding: 0 10px"> foreach ( wp_get_mu_plugins() as $mu_plugin ) {
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $_wp_plugin_file = $mu_plugin;
</ins><span class="cx" style="display: block; padding: 0 10px"> include_once $mu_plugin;
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $mu_plugin = $_wp_plugin_file; // Avoid stomping of the $mu_plugin variable in a plugin.
</ins><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> /**
</span><span class="cx" style="display: block; padding: 0 10px"> * Fires once a single must-use plugin has loaded.
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -357,13 +359,16 @@
</span><span class="cx" style="display: block; padding: 0 10px"> */
</span><span class="cx" style="display: block; padding: 0 10px"> do_action( 'mu_plugin_loaded', $mu_plugin );
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-unset( $mu_plugin );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+unset( $mu_plugin, $_wp_plugin_file );
</ins><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> // Load network activated plugins.
</span><span class="cx" style="display: block; padding: 0 10px"> if ( is_multisite() ) {
</span><span class="cx" style="display: block; padding: 0 10px"> foreach ( wp_get_active_network_plugins() as $network_plugin ) {
</span><span class="cx" style="display: block; padding: 0 10px"> wp_register_plugin_realpath( $network_plugin );
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+ $_wp_plugin_file = $network_plugin;
</ins><span class="cx" style="display: block; padding: 0 10px"> include_once $network_plugin;
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $network_plugin = $_wp_plugin_file; // Avoid stomping of the $network_plugin variable in a plugin.
</ins><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> /**
</span><span class="cx" style="display: block; padding: 0 10px"> * Fires once a single network-activated plugin has loaded.
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -374,7 +379,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> */
</span><span class="cx" style="display: block; padding: 0 10px"> do_action( 'network_plugin_loaded', $network_plugin );
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- unset( $network_plugin );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ unset( $network_plugin, $_wp_plugin_file );
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</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">@@ -415,7 +420,10 @@
</span><span class="cx" style="display: block; padding: 0 10px"> // Load active plugins.
</span><span class="cx" style="display: block; padding: 0 10px"> foreach ( wp_get_active_and_valid_plugins() as $plugin ) {
</span><span class="cx" style="display: block; padding: 0 10px"> wp_register_plugin_realpath( $plugin );
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+ $_wp_plugin_file = $plugin;
</ins><span class="cx" style="display: block; padding: 0 10px"> include_once $plugin;
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $plugin = $_wp_plugin_file; // Avoid stomping of the $plugin variable in a plugin.
</ins><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> /**
</span><span class="cx" style="display: block; padding: 0 10px"> * Fires once a single activated plugin has loaded.
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -426,7 +434,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> */
</span><span class="cx" style="display: block; padding: 0 10px"> do_action( 'plugin_loaded', $plugin );
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-unset( $plugin );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+unset( $plugin, $_wp_plugin_file );
</ins><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> // Load pluggable functions.
</span><span class="cx" style="display: block; padding: 0 10px"> require ABSPATH . WPINC . '/pluggable.php';
</span></span></pre>
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