array_map acts different in kphp

[vajexal]

in php null can be passed as callback to perform zip operation

var_dump(array_map(null, [1, 2, 3])); // [1, 2, 3]
// in kphp: Argument 'callback' should be function pointer, but null found

also in php few arrays can be passed after callback

var_dump(array_map(null, [1, 2], ['one', 'two'])); // [[1, 'one'], [2, 'two']]
// in kphp: Too much arguments in function call [/app/functions.txt : array_map] [found 3] [expected 2]