IS_CALLABLE_STRICT 3391 Zend/zend_API.c 	if (zend_is_callable_ex(callable, NULL, IS_CALLABLE_STRICT, callable_name, &fcc, NULL)) {
IS_CALLABLE_STRICT  478 ext/spl/php_spl.c 		if (!zend_is_callable_ex(zcallable, NULL, IS_CALLABLE_STRICT, &func_name, &fcc, &error)) {