Stuff

<?PHPclass Something{    public static function ReadExternal($data)  {		$content = explode( " ", base64_decode($data), 4);    if (count($content) == 4)    {	  	$hmac = Utility::calculateHMAC("THE MAGIC NUMBER", $content[0] . " " . $content[1] . " " . $content[2]);	  	if (base64_encode($hmac) === $content[3])	  	{	  	  // Set this donation object up!	  	  $instance = new Something(null);	  	  	  	  $instance->UserId = $content[1];	  	  $instance->ProjectId = $content[2];				return $instance;	  	}      	  	else	  	{		    throw new SomethingException("HMAC did not match.");		  }    }    else    {      throw new SomethingException("Not enough data.");    }        return null;  }    public function WriteExternal()  {    $data = $this->UserId . " " . $this->ProjectId;    $salt = uniqid(rand(), true);    $message = $salt . " " . $data;    $hmac =  Utility::calculateHMAC(Keys::_SECRET,$message);        $output = $message . " " . base64_encode($hmac);        return base64_encode($output);  }  }?>