php - check if $_POST is array?

Question

I know this may be a silly question, but I come across a snippet of php code that check if the $_POST is_array() before execute other functions.

Now I guess that $_POST should be always an associative array or not? is this check really needed? and why?

Answer 1

If it hasn't been changed in some manner like

$_POST = 'not array';

then it is array ;-)

Answer 2

$_POST is always an array, they're probably checking if a certain $_POST value is an array.

<input name="test" /> $_POST['test'] is not an array

<input name="test[]" /> $_POST['test'] is an array