notificationAdapters.php

<?php 

interface NotificationInterface {
	public function setData($data);
	public function sendNotification();
}

class TwitterAdapter implements NotificationInterface
{
	protected $_data;

	public function setData($data){
		$this->_data = $data;
	}

	public function sendNotification()
	{
		$twitterClient = new TwitterService();
		$twitterClient->setMessage($this->_data['message']);
		$twitterClient->sendTweet();
	}
}

class EmailAdapter implements NotificationInterface 
{
	protected $_data;

	public function setData($data){
		$this->_data = $data;
	}

	public function sendNotification()
	{
		$emailClient = new EmailService();
		$emailClient->setTitle($this->_data['title']);
		$emailClient->setMessage($this->_data['message']);
		$emailClient->setFrom($this->_data['from']);
		$emailClient->setTo($this->_data['to']);
		$emailClient->sendEmail();
	}
}

class SmsAdapter implements NotificationInterface
{
	protected $_data;

	public function setData($data){
		$this->_data = $data;
	}

	public function sendNotification()
	{
		$smsClient = new SmsService();
		$smsClient->setRecipient($this->_data['recipient']);
		$smsClient->setMessage($this->_data['message']);
		$smsClient->sendText();
	}
}