Force destruction of SimplePie objects for versions of PHP that don't release memory properly. Props arena, scribu. fixes #11074

git-svn-id: http://svn.automattic.com/wordpress/trunk@12193 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/dashboard.php

@@ -624,11 +624,15 @@ function wp_dashboard_incoming_links_output() {
 			printf(__('<strong>RSS Error</strong>: %s'), $rss->get_error_message());
 			echo '</p>';
 		}
+		$rss->__destruct(); 
+		unset($rss);
 		return;
 	}
 
 	if ( !$rss->get_item_quantity() ) {
 		echo '<p>' . __('This dashboard widget queries <a href="http://blogsearch.google.com/">Google Blog Search</a> so that when another blog links to your site it will show up here. It has found no incoming links&hellip; yet. It&#8217;s okay &#8212; there is no rush.') . "</p>\n";
+		$rss->__destruct(); 
+		unset($rss);
 		return;
 	}
 
@@ -682,7 +686,8 @@ function wp_dashboard_incoming_links_output() {
 	}
 
 	echo "</ul>\n";
-
+	$rss->__destruct(); 
+	unset($rss);
 }
 
 function wp_dashboard_incoming_links_control() {
@@ -737,12 +742,18 @@ function wp_dashboard_secondary_output() {
 			printf(__('<strong>RSS Error</strong>: %s'), $rss->get_error_message());
 			echo '</p></div>';
 		}
+		$rss->__destruct(); 
+		unset($rss);
 	} elseif ( !$rss->get_item_quantity() ) {
+		$rss->__destruct(); 
+		unset($rss);
 		return false;
 	} else {
 		echo '<div class="rss-widget">';
 		wp_widget_rss_output( $rss, $widgets['dashboard_secondary'] );
 		echo '</div>';
+		$rss->__destruct(); 
+		unset($rss);
 	}
 }
 
@@ -825,6 +836,9 @@ function wp_dashboard_plugins_output() {
 		echo "<h4>$label</h4>\n";
 		echo "<h5><a href='$link'>$title</a></h5>&nbsp;<span>(<a href='$ilink' class='thickbox' title='$title'>" . __( 'Install' ) . "</a>)</span>\n";
 		echo "<p>$description</p>\n";
+		
+		$$feed->__destruct();
+		unset($$feed);
 	}
 }
 
@@ -922,6 +936,8 @@ function wp_dashboard_rss_control( $widget_id, $form_inputs = array() ) {
 				$widget_options[$widget_id]['title'] = htmlentities(strip_tags($rss->get_title()));
 			else
 				$widget_options[$widget_id]['title'] = htmlentities(__('Unknown Feed'));
+			$rss->__destruct(); 
+			unset($rss);
 		}
 		update_option( 'dashboard_widget_options', $widget_options );
 	}

wp-includes/default-widgets.php

@@ -732,6 +732,8 @@ class WP_Widget_RSS extends WP_Widget {
 			echo $before_title . $title . $after_title;
 		wp_widget_rss_output( $rss, $instance );
 		echo $after_widget;
+		$rss->__destruct(); 
+		unset($rss);
 	}
 
 	function update($new_instance, $old_instance) {
@@ -770,7 +772,8 @@ function wp_widget_rss_output( $rss, $args = array() ) {
 	if ( is_wp_error($rss) ) {
 		if ( is_admin() || current_user_can('manage_options') )
 			echo '<p>' . sprintf( __('<strong>RSS Error</strong>: %s'), $rss->get_error_message() ) . '</p>';
-
+		$rss->__destruct(); 
+		unset($rss);
 		return;
 	}
 
@@ -787,6 +790,8 @@ function wp_widget_rss_output( $rss, $args = array() ) {
 
 	if ( !$rss->get_item_quantity() ) {
 		echo '<ul><li>' . __( 'An error has occurred; the feed is probably down. Try again later.' ) . '</li></ul>';
+		$rss->__destruct(); 
+		unset($rss);
 		return;
 	}
 
@@ -838,6 +843,8 @@ function wp_widget_rss_output( $rss, $args = array() ) {
 		}
 	}
 	echo '</ul>';
+	$rss->__destruct(); 
+	unset($rss);
 }
 
 
@@ -947,6 +954,8 @@ function wp_widget_rss_process( $widget_rss, $check_feed = true ) {
 			while ( stristr($link, 'http') != $link )
 				$link = substr($link, 1);
 		}
+		$rss->__destruct(); 
+		unset($rss);
 	}
 
 	return compact( 'title', 'url', 'link', 'items', 'error', 'show_summary', 'show_author', 'show_date' );