The EvilWalrus has alink today to a nice POP3 checker in PHP that was submitted at the PHP Classes Repository. Looks like it has some nice features to it already, too.
Also, we have a few links care of Zend.com: first, a link to an article about caching your PHP scripts and how it could improve your performance. And, apparently in an effor to improve their Cache software's appeal to the general audience, they have provided a PDF White Paper that was done about it.
And, lastly, the PHPNewbie has done it again and created a new tutorial telling all about how PHP and PostgreSQL can make your web life easier and more fun for you to maintain.