[insert_php]
if((!isset($_POST[‘registrationid’]) && !isset($_POST[‘groupid’])) || $_POST[‘checksum’] != “aht4q3*#%FDSgr@#h”){
echo ‘‘;
}
if(isset($_POST[‘registrationid’])){
$registrationID = $_POST[‘registrationid’];
markPaymentReceived($registrationID);
}elseif(isset($_POST[‘groupid’])){
$groupID = $_POST[‘groupid’];
markGroupPaymentReceived($groupID);
}
[/insert_php]