In this new entry on his blog today, Derick Rethans has a pointer to one of his latest articles in php|architect.

The June 2005 issue of php|architect published an article on "References in PHP". The article explains in detail how variables exactly work in PHP, in a hopefully clear text and with diagrams.

The magazine kindly allowed me to publish a PDF of this article on my site so that it can reach a greater audience. You can find the PDF here.

The first page on ">the PDF is an ad for php|architect and if you click on it you'll get to their "Order Print version" page, but that'll also take you away from the PDF too, so watch that...