no-encapsulation.php

<?php
var $data // is not; private $data, public $data and protected $data

class This
{
   var $data;

   function getData($key)
   {
       return $this->data[$key];
   }
}

// Client Code
echo($this->data['foobar']);
echo($this->getData('footer')); // No difference except one jumps through more hoops and is slower to process. No point.
?>