Ticket #21142: 21142_2.diff

ms-functions.php

@@ -1075 +1075 @@
  */
 function domain_exists($domain, $path, $site_id = 1) {
         global $wpdb;
-        return $wpdb->get_var( $wpdb->prepare("SELECT blog_id FROM $wpdb->blogs WHERE domain = %s AND path = %s AND site_id = %d", $domain, $path, $site_id) );
+        $result = $wpdb->get_var( $wpdb->prepare("SELECT blog_id FROM $wpdb->blogs WHERE domain = %s AND path = %s AND site_id = %d", $domain, $path, $site_id) );
+        return apply_filters( 'domain_exists', $result, $domain, $path, $site_id );
 }
 
 /**