note 13625 added to keyword.parent.php

If you have a complex class hierarchy, I find that it's a good idea to have a function constructor() in every class, and the 'real' php constructor only exists in the absolute base class. From the basic constructor, you call $this->constructor(). Now descendants simply have to call parent::constructor() in their own constructor, which eliminates complicated parent calls. http://www.php.net/manual/en/keyword.parent.php