Better way for checking $_REQUEST variable

Question

$p = (isset($_REQUEST["p"])?$_REQUEST["p"]:"");

This is the common line I usually use in my php code. I always assume is there a better(small and faster) way to write the same ?

Answer 1

Create your own function :

function getIfSet(&$value, $default = null)
{
    return isset($value) ? $value : $default;
}

$p = getIfSet($_REQUEST['p']);

There's no other clean solution.