Sandro Zic recently gave a presentation on Java and PHP, and posted his slides here. I didn't attend his talk, so I don't have all the facts, but I would like to comment on one of his slides [...]. First, a minor point. Limited or no OOP has rarely stopped any software from being enterprise-ready. Most modern operating systems continue to be written in C, and the large Cobol programs running on mainframes that manage your bank accounts and insurance do not use OOP. [...] Let's address some of his other criticisms: Virtually no multi-threading, Lack of maintenance tools, and Immature frameworks.

In his latest posting over on PHPEverywhere rebuts some of the things said in the above-mentioned speech, making the point that, despite PHP not having all of the features of more "enterprise languages", that does not mean it cannot be deployed in such an environment. What PHP does, it does well - it's when people try to force it into another mold that things get a little odd...