php. why? asp (not going into .NET here) is propreitary, doesn't run on anything but IIS (which means it inherently has security holes) and the syntax is extremely convoluted. i tried learning ASP a while ago, and it set me off the track of hypertext preprocessors (i started using perl for everything. recently discovered that php was alot better for alot of things i was doing.) not to mention that php has unparallelled integration with SQL. like asp, php also has a company behind it (zend) that is pushing development and keeping it organized, but at least zend isn't a coporate money-hogging control freak.
