With the third posting in his "Crouching Javascript, Hidden PHP" series, Harry Fuecks has a new script server that allows you to comingle PHP and Javascript in a very interesting way.

ScriptServer provides tools to "hook up" PHP and Javascript, for the purpose of fetching data from PHP into a web page which has already loaded, without reloading the entire page.

The objective is to make connecting a Javascript client with a PHP server as painless and error-free as possible. To this end ScriptServer allows you to define a class in PHP and call it's methods directly (and remotely) from Javascript.

I have to admit, this is a pretty slick idea - now, just get it out of beta, make it a bit more full-featured, and things could really change on the Javascript/PHP intergration front...