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<title>[40965] trunk: Cron API: Introduce `wp_unschedule_hook()` to clear all events attached to a hook.</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/40965">40965</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/40965","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>2017-06-30 00:21:49 +0000 (Fri, 30 Jun 2017)</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'>Cron API: Introduce `wp_unschedule_hook()` to clear all events attached to a hook.
This complements `wp_clear_scheduled_hook()`, which only clears events attached with specific arguments.
Props arena, mordauk, jrf.
Fixes <a href="https://core.trac.wordpress.org/ticket/18997">#18997</a>.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpincludescronphp">trunk/src/wp-includes/cron.php</a></li>
<li><a href="#trunktestsphpunittestscronphp">trunk/tests/phpunit/tests/cron.php</a></li>
</ul>
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<h3>Diff</h3>
<a id="trunksrcwpincludescronphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-includes/cron.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/cron.php 2017-06-29 16:04:45 UTC (rev 40964)
+++ trunk/src/wp-includes/cron.php 2017-06-30 00:21:49 UTC (rev 40965)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -191,7 +191,7 @@
</span><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><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- * Unschedule all events attached to the specified hook.
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ * Unschedule all events attached to the hook with the specified arguments.
</ins><span class="cx" style="display: block; padding: 0 10px"> *
</span><span class="cx" style="display: block; padding: 0 10px"> * @since 2.1.0
</span><span class="cx" style="display: block; padding: 0 10px"> *
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -222,6 +222,29 @@
</span><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><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ * Unschedule all events attached to the hook.
+ *
+ * Can be useful for plugins when deactivating to clean up the cron queue.
+ *
+ * @since 4.9.0
+ *
+ * @param string $hook Action hook, the execution of which will be unscheduled.
+ */
+function wp_unschedule_hook( $hook ) {
+ $crons = _get_cron_array();
+
+ foreach( $crons as $timestamp => $args ) {
+ unset( $crons[ $timestamp ][ $hook ] );
+
+ if ( empty( $crons[ $timestamp ] ) ) {
+ unset( $crons[ $timestamp ] );
+ }
+ }
+
+ _set_cron_array( $crons );
+}
+
+/**
</ins><span class="cx" style="display: block; padding: 0 10px"> * Retrieve the next timestamp for an event.
</span><span class="cx" style="display: block; padding: 0 10px"> *
</span><span class="cx" style="display: block; padding: 0 10px"> * @since 2.1.0
</span></span></pre></div>
<a id="trunktestsphpunittestscronphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/tests/phpunit/tests/cron.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/tests/phpunit/tests/cron.php 2017-06-29 16:04:45 UTC (rev 40964)
+++ trunk/tests/phpunit/tests/cron.php 2017-06-30 00:21:49 UTC (rev 40965)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -186,7 +186,28 @@
</span><span class="cx" style="display: block; padding: 0 10px"> // wp_clear_scheduled_hook() should take args as an array like the other functions and does from WP 3.0
</span><span class="cx" style="display: block; padding: 0 10px"> wp_clear_scheduled_hook($multi_hook, $multi_args);
</span><span class="cx" style="display: block; padding: 0 10px"> $this->assertFalse( wp_next_scheduled($multi_hook, $multi_args) );
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ }
</ins><span class="cx" style="display: block; padding: 0 10px">
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ /**
+ * @ticket 18997
+ */
+ function test_unschedule_hook() {
+ $hook = __FUNCTION__;
+ $args = array( rand_str() );
+
+ // schedule several events with and without arguments.
+ wp_schedule_single_event( strtotime( '+1 hour' ), $hook );
+ wp_schedule_single_event( strtotime( '+2 hour' ), $hook );
+ wp_schedule_single_event( strtotime( '+3 hour' ), $hook, $args );
+ wp_schedule_single_event( strtotime( '+4 hour' ), $hook, $args );
+
+ // make sure they're returned by wp_next_scheduled().
+ $this->assertTrue( wp_next_scheduled( $hook ) > 0 );
+ $this->assertTrue( wp_next_scheduled( $hook, $args ) > 0 );
+
+ // clear the schedule and make sure it's gone.
+ wp_unschedule_hook( $hook );
+ $this->assertFalse( wp_next_scheduled( $hook ) );
</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></pre>
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