--- /dev/null
+<?php defined('SYSPATH') OR die('No direct access allowed.');
+/**
+ * utf8::strlen
+ *
+ * @package Core
+ * @author Kohana Team
+ * @copyright (c) 2007 Kohana Team
+ * @copyright (c) 2005 Harry Fuecks
+ * @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt
+ */
+function _strlen($str)
+{
+ // Try mb_strlen() first because it's faster than combination of is_ascii() and strlen()
+ if (SERVER_UTF8)
+ return mb_strlen($str);
+
+ if (utf8::is_ascii($str))
+ return strlen($str);
+
+ return strlen(utf8_decode($str));
+}
\ No newline at end of file