Changeset 19918 for trunk/wp-includes/functions.php

Timestamp:

02/14/2012 03:09:35 PM (12 years ago)

Author:

ryan

Message:

Split the main WP_Query posts query into two queries to avoid temp tables. Leverage cache to avoid second query in persistent cache environments. Props scribu, cheald, prettyboymp. see #18536

File:

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

trunk/wp-includes/functions.php

@@ -3704 +3704 @@
         return $caller;
 }
+
+/**
+ * Retrieve ids that are not already present in the cache
+ *
+ * @since 3.4.0
+ *
+ * @param array $object_ids ID list
+ * @param string $cache_key The cache bucket to check against
+ *
+ * @return array
+ */
+function _get_non_cached_ids( $object_ids, $cache_key ) {
+    $clean = array();
+    foreach ( $object_ids as $id ) {
+        $id = (int) $id;
+        if ( !wp_cache_get( $id, $cache_key ) ) {
+            $clean[] = $id;
+        }
+    }
+
+    return $clean;
+}
+