I just started to learn PHP and doing things with WordPress and I am a bit confused about information in Codex. Was told that Codex got all info I required but I got stuck with it.
What array fields are in
$_REQUEST in WordPress? Can not find it in Codex.
E.g.: people use
$my_contact = $_REQUEST['contact'];
How do they know
Is there any workflow to find informations about variables which are not described in Codex? Should I print off all the array to see what fields are inside?
Google does not help me.. about $_REQUEST.