PHP does have limited locale support, I think PHP 6 primary focus was full unicode support and namespaces. :P PHP can be used (and is used) to power everything from small scale to massive enterprise applications. What I like about PHP and open source (when done properly) is the flexibility in picking what parts I want and assembling those parts into my own custom tool chain. I'm not forced into using any one framework. In fact, I wrote my own (derived from Zend & Symphony) but I have some Zend classes and a few others to boot. PHP is a great environment. My only rant about PHP would be that it's so easy to learn, any dummy can buy a book and in 30 days claim to be PHP/MySQL/OOP expert and compete for the same jobs I do. :P Cheers :)
I'm finding the only constant in software development is change it self.