array_flip 배열의 값과 첨자 바꾸기 (PHP 4, PHP 5, PHP 7) array_flip — Exchanges all keys with their associated values in an array Description ¶ array array_flip ( array $array ) array_flip() returns an array in flip order, i.e. keys from array become values and values from array become keys. Note that the values of array need to be valid keys, i.e. they need to be either integer or string. A warning will ..