// Fix #PSCFV-4017

git-svn-id: http://dev.prestashop.com/svn/v1/branches/1.5.x@17338 b9a71923-0436-4b27-9f14-aed3839534dd

classes/Tools.php

@@ -973,6 +973,8 @@ class ToolsCore
 			$str = mb_strtolower($str, 'utf-8');
 
 		$str = trim($str);
+		if (!function_exists('mb_strtolower'))
+			$str = Tools::replaceAccentedChars($str);
 
 		// Remove all non-whitelist chars.
 		$str = preg_replace('/[^a-zA-Z0-9\s\'\:\/\[\]-\pL]/u', '', $str);