ExactTarget Form Signup with Triggered Send

require('ET_Client.php');

$myclient = new \ET_Client();
// NOTE: These examples only work in accounts where the SubscriberKey functionality is not enabled
//       SubscriberKey will need to be included in the props if that feature is enabled

// Create Subscriber
$subCreate = new \ET_Subscriber();
$subCreate->authStub = $myclient;
$subCreate->props = array("EmailAddress" => $email, "Lists" => array("ID" => $listId));
$subCreate->props['Attributes'] = array(array('Name' => 'First Name', 'Value' => $firstName), array('Name' => 'Last Name', 'Value' => $lastName), array('Name' => 'Full Name', 'Value' => $fullName));
$postResult = $subCreate->post();

if ($postResult->status){
    $sendTrigger = new \ET_TriggeredSend();
    $sendTrigger->props = array('CustomerKey' => '0000');
    $sendTrigger->authStub = $myclient;
    $sendTrigger->subscribers = array(array("EmailAddress" => $email, "SubscriberKey" => $email));
    $sendResult = $sendTrigger->send();
}