Can someone help me explain the coding?
if(isset($_SESSION['patron_ID']))
{
set_time_limit(0);
include 'dbconnect.php';
$studylevel1 = $_POST['studylevel'];
if(isset($_POST['submit']))
{ do
{
$senderid = $_SESSION['patron_ID']; $studylevel1 = $_POST['studylevel'];}}}