Learn PHP the easy way. Helpful articles, tutorials, and scripts.

multiple documentations in one ajaxed frontend.

Developer zone on the Zend site, great compilation of blogs, news, articles and tutorials

php company

This is a beginners website/course on PHP created for web designers who have little to no programming experience. The site and videos assume you need to have things explained (and demonstrated) in non-nerd terms.

This is a nice detailed excerpt on using the powerful PostgreSQL db with PHP

A multi-part tutorial for beginners to PHP web development

I guess you could say this is the official PHP site. :)