In PHP the methods GET and POST are used to send the form data .
GET Method :
1024 Bytes of data can be transferred via this method and the transfer data parameters are visible in the address bar so it is not as much as secure method .
Declaration :
$get = $_GET[‘variable’];
POST method :
It does the same as the GET but the main difference between the GET and POST is that the transferred data are not visible to end user thus , it is much secure in comparison GET method.
Declaration :
$post = $_POST[‘variable’];
REQUEST Method :
This method accept the form parameters either the method is GET or POST.
Declaration :
$request = $_REQUEST[‘variable’];