Question

Why is the following array() passed into a function. I am not able to understand the array() function.
I know if $_POST doesn’t have any value, it will pass array(), but what is the value in array()?

SomeFunction($_POST ? $_POST : array());

Answer 1

array() isn’t a function per se, it’s a language construct. But simply using array() will create an empty array for you, that is, with zero elements.

You probably want to check for:

isset($_POST) ? $_POST : array()

Edit:

As pointed out by greg, $_POST will always be set. So there is no need to check for it and return an empty array. someFunc($_POST) should do exactly the same thing.