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Update StringUtils.php

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Scott Arciszewski 2015-03-23 11:26:23 -04:00 committed by Fabien Potencier
parent 7221efc095
commit 76b36d385f
1 changed files with 8 additions and 1 deletions
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9
src/Symfony/Component/Security/Core/Util/StringUtils.php
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@ -72,7 +72,14 @@ class StringUtils
*/ */
public static function safeStrlen($string) public static function safeStrlen($string)
{ {
if (function_exists('mb_strlen')) { // Premature optimization
// Since this cannot be changed at runtime, we can cache it
static $func_exists = null;
if ($func_exists === null) {
$func_exists = function_exists('mb_strlen');
}
if ($func_exists) {
return mb_strlen($string, '8bit'); return mb_strlen($string, '8bit');
} }