Ticket #21663: 21663.16.diff

wp-db.php

@@ -2108 +2108 @@
                 }
                 return preg_replace( '/[^0-9.].*/', '', $server_info );
         }
+
+    /**
+     * Returns whether wpdb uses mysqli over mysql.
+     *
+     * @since 3.9.0
+     *
+     * @return bool true if mysqli is used
+     */
+    function uses_mysqli() {
+        return $this->use_mysqli;
+
+    }
 }