So PHP 5.0.0 is out of beta status now...

[Viper007Bond]

... and I assume HR is testing it or something (or will be soon)?

For everyone else, a good read on upgrading scripts:

http://www.php.net/migration5

[Stotan]

With PHP 5, there has been an attempted to move PHP from a run-of-the-mill scripting language to an object oriented web application programming language in the same league as JSP/ASP (albeit not strongly typed). I've been rather dubious for quite some time about PHP's ability to scale to large web applications, and PHP 5 has certainly addressed the majority of my concerns through its new object model. Proper MVC programming is now possible, and errors can be handled elegantly through exceptions. Could this spell the end for JSP, now runner up to ASP(.NET) and PHP?

I guess one major issuance is on how it integrates (seamlessly or not) with J2EE architecture.