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.

Answer 1

$_POST is always defined as an array even it doesn't contain any key/value pairs.

Answer 2

As already mentioned several times, $_POST is a superglobal that is always defined and always an array (unless overwritten).

If you're attempting to test if something has been posted, you could use something like follows:

if (count($_POST)) {
    // something has been submitted
}

To answer the main question, no, the is_array check is not required.