Ticket #9124: 9124.3.diff

wp-includes/query.php

@@ -2305 +2305 @@
                 if ( ! empty($q['meta_key']) )
                         $where .= $wpdb->prepare(" AND $wpdb->postmeta.meta_key = %s ", $q['meta_key']);
                 if ( ! empty($q['meta_value']) ) {
-                        if ( empty($q['meta_compare']) || ! in_array($q['meta_compare'], array('=', '!=', '>', '>=', '<', '<=')) )
+                        if ( empty($q['meta_compare']) || ! in_array($q['meta_compare'], array('=', '!=', '>', '>=', '<', '<=', 'in')) )
                                 $q['meta_compare'] = '=';
-
-                        $where .= $wpdb->prepare("AND $wpdb->postmeta.meta_value {$q['meta_compare']} %s ", $q['meta_value']);
+                        
+                        if ( 'in' == $q['meta_compare'] ) {
+                                        if ( !is_array($q['meta_value']) )
+                                                $q['meta_value'] = preg_split('!,\[\r\n\t ]+!', $q['meta_value']); 
+                                        $meta_field_types = substr(str_repeat(',%s', count($q['meta_value'])), 1);
+                                        $where .= $wpdb->prepare("AND $wpdb->postmeta.meta_value IN($meta_field_types) ", $q['meta_value']);
+                                        unset($meta_field_types);
+                        }
+                        else
+                                $where .= $wpdb->prepare("AND $wpdb->postmeta.meta_value {$q['meta_compare']} %s ", $q['meta_value']);
                 }
 
                 // Apply filters on where and join prior to paging so that any