Sounds hard? Well, PHP5 has been there several years and has been proven rock-solid. I appreciate the go-php5 project and want to support this with the following announcement:

With the beginning of issue 1.08 (coming to the newsstands in November 2007), PHP Magazin won’t accept any articles or source codes that cover PHP4 topics or PHP4 sourcecode. Sourcecode delivery must cover PHP 5.2 or greater.