From d68c4517118593c6f6b2deb8b6e926f87d18ee82 Mon Sep 17 00:00:00 2001
From: Nicolas Grekas <nicolas.grekas@gmail.com>
Date: Fri, 13 Jan 2017 10:44:13 +0100
Subject: [PATCH] [Cache] Using strpbrk() instead of strcspn() is faster

---
 src/Symfony/Component/Cache/CacheItem.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Symfony/Component/Cache/CacheItem.php b/src/Symfony/Component/Cache/CacheItem.php
index bdef410ca2675..d8ceb28ebdb74 100644
--- a/src/Symfony/Component/Cache/CacheItem.php
+++ b/src/Symfony/Component/Cache/CacheItem.php
@@ -101,7 +101,7 @@ public function expiresAfter($time)
      *
      * @param string $key The key to validate
      *
-     * @throws InvalidArgumentException When $key is not valid.
+     * @throws InvalidArgumentException When $key is not valid
      */
     public static function validateKey($key)
     {
@@ -111,7 +111,7 @@ public static function validateKey($key)
         if (!isset($key[0])) {
             throw new InvalidArgumentException('Cache key length must be greater than zero');
         }
-        if (isset($key[strcspn($key, '{}()/\@:')])) {
+        if (false !== strpbrk($key, '{}()/\@:')) {
             throw new InvalidArgumentException(sprintf('Cache key "%s" contains reserved characters {}()/\@:', $key));
         }
     }