Ticket #20942: gmt-date-matches-refresh.diff

wp-includes/formatting.php

@@ -1892 +1892 @@
  */
 function get_gmt_from_date($string, $format = 'Y-m-d H:i:s') {
         preg_match('#([0-9]{1,4})-([0-9]{1,2})-([0-9]{1,2}) ([0-9]{1,2}):([0-9]{1,2}):([0-9]{1,2})#', $string, $matches);
+        
+        if ( ! $matches )
+                return date( $format, 0 );
+        
         $tz = get_option('timezone_string');
         if ( $tz ) {
                 date_default_timezone_set( $tz );
-                $datetime = new DateTime( $string );
+                $datetime = date_create( $string );
+                if ( ! $datetime )
+                        return date( $format, 0 );
+                
                 $datetime->setTimezone( new DateTimeZone('UTC') );
                 $offset = $datetime->getOffset();
                 $datetime->modify( '+' . $offset / 3600 . ' hours');