Ticket #21142: 21142_domain_exists.diff

wp-includes/ms-functions.php

@@ -1084 +1084 @@
  */
 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) );
+        return apply_filters( 'domain_exists', $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) ), $domain, $path, $site_id );
 }
 
 /**