Changeset 13576 for trunk/wp-includes/pluggable.php

Timestamp:

03/03/2010 07:08:30 PM (14 years ago)

Author:

ryan

Message:

Improve user listing performance. Props miqrogroove. see #11914

File:

• trunk/wp-includes/pluggable.php (modified) (1 diff)

trunk/wp-includes/pluggable.php

@@ -137 +137 @@
 
     return $user;
+}
+endif;
+
+if ( !function_exists('cache_users') ) :
+/**
+ * Retrieve info for user lists to prevent multiple queries by get_userdata()
+ *
+ * @since 3.0.0
+ *
+ * @param array $users User ID numbers list
+ */
+function cache_users( $users ) {
+    global $wpdb;
+
+    $clean = array();
+    foreach($users as $id) {
+        $id = (int) $id;
+        if (wp_cache_get($id, 'users')) {
+            // seems to be cached already
+        } else {
+            $clean[] = $id;
+        }
+    }
+
+    if ( 0 == count($clean) )
+        return;
+
+    $list = implode(',', $clean);
+
+    $results = $wpdb->get_results("SELECT * FROM $wpdb->users WHERE ID IN ($list)");
+    
+    _fill_many_users($results);
 }
 endif;