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<title>[17638] trunk/wp-includes/plugin.php: Avoid array push/
 pops for empty filters and actions.</title>
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<body>

<div id="msg">
<dl>
<dt>Revision</dt> <dd><a href="http://trac.wordpress.org/changeset/17638">17638</a></dd>
<dt>Author</dt> <dd>ryan</dd>
<dt>Date</dt> <dd>2011-04-14 18:05:30 +0000 (Thu, 14 Apr 2011)</dd>
</dl>

<h3>Log Message</h3>
<pre>Avoid array push/pops for empty filters and actions.  fixes <a href="http://trac.wordpress.org/ticket/17110">#17110</a></pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkwpincludespluginphp">trunk/wp-includes/plugin.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkwpincludespluginphp"></a>
<div class="modfile"><h4>Modified: trunk/wp-includes/plugin.php (17637 => 17638)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/wp-includes/plugin.php        2011-04-13 17:30:02 UTC (rev 17637)
+++ trunk/wp-includes/plugin.php        2011-04-14 18:05:30 UTC (rev 17638)
</span><span class="lines">@@ -135,19 +135,23 @@
</span><span class="cx">         global $wp_filter, $merged_filters, $wp_current_filter;
</span><span class="cx"> 
</span><span class="cx">         $args = array();
</span><del>-        $wp_current_filter[] = $tag;
</del><span class="cx"> 
</span><span class="cx">         // Do 'all' actions first
</span><span class="cx">         if ( isset($wp_filter['all']) ) {
</span><ins>+                $wp_current_filter[] = $tag;
</ins><span class="cx">                 $args = func_get_args();
</span><span class="cx">                 _wp_call_all_hook($args);
</span><span class="cx">         }
</span><span class="cx"> 
</span><span class="cx">         if ( !isset($wp_filter[$tag]) ) {
</span><del>-                array_pop($wp_current_filter);
</del><ins>+                if ( isset($wp_filter['all']) )
+                        array_pop($wp_current_filter);
</ins><span class="cx">                 return $value;
</span><span class="cx">         }
</span><span class="cx"> 
</span><ins>+        if ( !isset($wp_filter['all']) )
+                $wp_current_filter[] = $tag;
+
</ins><span class="cx">         // Sort
</span><span class="cx">         if ( !isset( $merged_filters[ $tag ] ) ) {
</span><span class="cx">                 ksort($wp_filter[$tag]);
</span><span class="lines">@@ -193,19 +197,22 @@
</span><span class="cx"> function apply_filters_ref_array($tag, $args) {
</span><span class="cx">         global $wp_filter, $merged_filters, $wp_current_filter;
</span><span class="cx"> 
</span><del>-        $wp_current_filter[] = $tag;
-
</del><span class="cx">         // Do 'all' actions first
</span><span class="cx">         if ( isset($wp_filter['all']) ) {
</span><ins>+                $wp_current_filter[] = $tag;
</ins><span class="cx">                 $all_args = func_get_args();
</span><span class="cx">                 _wp_call_all_hook($all_args);
</span><span class="cx">         }
</span><span class="cx"> 
</span><span class="cx">         if ( !isset($wp_filter[$tag]) ) {
</span><del>-                array_pop($wp_current_filter);
</del><ins>+                if ( isset($wp_filter['all']) )
+                        array_pop($wp_current_filter);
</ins><span class="cx">                 return $args[0];
</span><span class="cx">         }
</span><span class="cx"> 
</span><ins>+        if ( !isset($wp_filter['all']) )
+                $wp_current_filter[] = $tag;
+
</ins><span class="cx">         // Sort
</span><span class="cx">         if ( !isset( $merged_filters[ $tag ] ) ) {
</span><span class="cx">                 ksort($wp_filter[$tag]);
</span><span class="lines">@@ -360,19 +367,22 @@
</span><span class="cx">         else
</span><span class="cx">                 ++$wp_actions[$tag];
</span><span class="cx"> 
</span><del>-        $wp_current_filter[] = $tag;
-
</del><span class="cx">         // Do 'all' actions first
</span><span class="cx">         if ( isset($wp_filter['all']) ) {
</span><ins>+                $wp_current_filter[] = $tag;
</ins><span class="cx">                 $all_args = func_get_args();
</span><span class="cx">                 _wp_call_all_hook($all_args);
</span><span class="cx">         }
</span><span class="cx"> 
</span><span class="cx">         if ( !isset($wp_filter[$tag]) ) {
</span><del>-                array_pop($wp_current_filter);
</del><ins>+                if ( isset($wp_filter['all']) )
+                        array_pop($wp_current_filter);
</ins><span class="cx">                 return;
</span><span class="cx">         }
</span><span class="cx"> 
</span><ins>+        if ( !isset($wp_filter['all']) )
+                $wp_current_filter[] = $tag;
+
</ins><span class="cx">         $args = array();
</span><span class="cx">         if ( is_array($arg) &amp;&amp; 1 == count($arg) &amp;&amp; isset($arg[0]) &amp;&amp; is_object($arg[0]) ) // array(&amp;$this)
</span><span class="cx">                 $args[] =&amp; $arg[0];
</span><span class="lines">@@ -446,19 +456,22 @@
</span><span class="cx">         else
</span><span class="cx">                 ++$wp_actions[$tag];
</span><span class="cx"> 
</span><del>-        $wp_current_filter[] = $tag;
-
</del><span class="cx">         // Do 'all' actions first
</span><span class="cx">         if ( isset($wp_filter['all']) ) {
</span><ins>+                $wp_current_filter[] = $tag;
</ins><span class="cx">                 $all_args = func_get_args();
</span><span class="cx">                 _wp_call_all_hook($all_args);
</span><span class="cx">         }
</span><span class="cx"> 
</span><span class="cx">         if ( !isset($wp_filter[$tag]) ) {
</span><del>-                array_pop($wp_current_filter);
</del><ins>+                if ( isset($wp_filter['all']) )
+                        array_pop($wp_current_filter);
</ins><span class="cx">                 return;
</span><span class="cx">         }
</span><span class="cx"> 
</span><ins>+        if ( !isset($wp_filter['all']) )
+                $wp_current_filter[] = $tag;
+
</ins><span class="cx">         // Sort
</span><span class="cx">         if ( !isset( $merged_filters[ $tag ] ) ) {
</span><span class="cx">                 ksort($wp_filter[$tag]);
</span></span></pre>
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