From 92602fefda8a14b04e32ac12f279d4b47a5b5f23 Mon Sep 17 00:00:00 2001
From: Ori Livneh <ori@wikimedia.org>
Date: Tue, 25 Aug 2015 18:13:14 -0700
Subject: [PATCH] Micro-optimize Language::isMultiByte()

The xenon logs on performance.wikimedia.org show this function as being on-CPU
about 1% of the time, making it a candidate for optimization. The version in
this patch is about 30-50% faster in my benchmarks.

Change-Id: I26385ade7600fc11965d94468b57e41ec257de51
---
 languages/Language.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/languages/Language.php b/languages/Language.php
index b698bebf43..370e2ed8c8 100644
--- a/languages/Language.php
+++ b/languages/Language.php
@@ -2838,7 +2838,7 @@ class Language {
 	 * @return bool
 	 */
 	function isMultibyte( $str ) {
-		return (bool)preg_match( '/[\x80-\xff]/', $str );
+		return strlen( $str ) !== mb_strlen( $str );
 	}
 
 	/**
-- 
2.20.1