--TEST-- Bug #69315 (disable_functions behaviors inconsistently) --INI-- disable_functions=strlen,defined,call_user_func,constant,is_string --FILE-- <?php var_dump(function_exists("strlen")); var_dump(is_callable("strlen")); var_dump(strlen("xxx")); var_dump(defined("PHP_VERSION")); var_dump(constant("PHP_VERSION")); var_dump(call_user_func("strlen")); var_dump(is_string("xxx")); --EXPECTF-- bool(false) bool(true) Warning: strlen() has been disabled for security reasons in %sbug69315.php on line %d NULL Warning: defined() has been disabled for security reasons in %sbug69315.php on line %d NULL Warning: constant() has been disabled for security reasons in %sbug69315.php on line %d NULL Warning: call_user_func() has been disabled for security reasons in %sbug69315.php on line %d NULL Warning: is_string() has been disabled for security reasons in %sbug69315.php on line %d NULL