Observer sample

CustomContent.php

<?php  

namespace App;

use Juriya\Pattern\Observer;
use Juriya\ResponseHttp;

class CustomContent implements Observer {

	public static function onExecute($observable, $arguments)
	{
		$currentCode = $arguments->getCode();
		$currentContent = $arguments->getContent();

		// We will change all 'a' character into 'i'
		$customContent = str_replace('a', 'i', $currentContent);

		$newResponse = new ResponseHttp($currentCode, $customContent);
		$newResponse->render();
	}
}