FN("substr", MAY_BE_NULL | MAY_BE_FALSE | MAY_BE_STRING),
FN("substr_replace", MAY_BE_NULL | MAY_BE_FALSE | MAY_BE_STRING | MAY_BE_ARRAY | MAY_BE_ARRAY_KEY_ANY | MAY_BE_ARRAY_OF_STRING),
F1("quotemeta", MAY_BE_NULL | MAY_BE_FALSE | MAY_BE_STRING),
- F1("ucfirst", MAY_BE_NULL | MAY_BE_STRING),
- F1("lcfirst", MAY_BE_NULL | MAY_BE_STRING),
+ FN("ucfirst", MAY_BE_NULL | MAY_BE_STRING),
+ FN("lcfirst", MAY_BE_NULL | MAY_BE_STRING),
F1("ucwords", MAY_BE_NULL | MAY_BE_STRING),
FN("strtr", MAY_BE_NULL | MAY_BE_FALSE | MAY_BE_STRING),
FN("addslashes", MAY_BE_NULL | MAY_BE_STRING),