Since you already have a degree, if you are interested in learning PHP, Zend offers training. When you finish the training you can test for certification from ZEND. As far as PHP goes, this is probably much more in-depth than you will get from a university course.

Here is a link if you are interested: http://www.zend.com/en/services/training/

One thing that has helped me in the past is studying existing code and then making modifications to it.