<?php
use Gomoob\Pushwoosh\Model\Request\DeleteMessageRequest;

// Creates the request instance
$request = DeleteMessageRequest::create()->setMessage('MESSAGE_CODE');

// Call the '/deleteMessage' Web Service
$response = $pushwoosh->deleteMessage($request);

if($response->isOk()) {
    print 'Great, my message has been deleted !';
} else {
    print 'Oups, the deletion failed :-('; 
    print 'Status code : ' . $response->getStatusCode();
    print 'Status message : ' . $response->getStatusMessage();
}
?>