Ticket #23132: 23132.patch

wp-includes/functions.php

@@ -3262 +3262 @@
  * @return float|bool
  */
 function wp_timezone_override_offset() {
-        if ( !$timezone_string = get_option( 'timezone_string' ) ) {
-                return false;
+        static $gmt_offset;
+
+        if ( ! isset( $gmt_offset ) ) {
+                $gmt_offset = false;
+                $timezone_string = get_option( 'timezone_string' );
+                if ( $timezone_string ) {
+                        $timezone_object = timezone_open( $timezone_string );
+                        $datetime_object = date_create();
+                        if ( false !== $timezone_object && false !== $datetime_object )
+                                $gmt_offset = round( timezone_offset_get( $timezone_object, $datetime_object ) / HOUR_IN_SECONDS, 2 );
+                }
         }
 
-        $timezone_object = timezone_open( $timezone_string );
-        $datetime_object = date_create();
-        if ( false === $timezone_object || false === $datetime_object ) {
-                return false;
-        }
-        return round( timezone_offset_get( $timezone_object, $datetime_object ) / HOUR_IN_SECONDS, 2 );
+        return $gmt_offset;
 }
 
 /**