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$_REQUEST[$k] = isset($_GET[$k]) ? $_GET[$k] : $_POST[$k];
or
$_REQUEST[$k] = isset($_POST[$k]) ? $_POST[$k] : $_GET[$k];
Which is the case,reason?
$_REQUESTis the union of$_GET,$_POST, and$_COOKIEwhere variables_order and since PHP 5.3 request_order defines the order.The default order is GET, POST, and then cookie. That means POST parameters overwrite existing GET parameters and cookies overwrite existing POST and GET parameters.