$arr1 = array ('a'=>1,'b'=>2,'c'=>3,'d'=>4,'e'=>5); file_put_contents("array.json",json_encode($arr1)); # array.json => {"a":1,"b":2,"c":3,"d":4,"e":5} $arr2 = json_decode(file_get_contents('array.json'), true); $arr1 === $arr2 # => true