ompCro0Ked_on what grounds? php is valuable knowledge if you're going to do anythingIt's good to know PHP in the sense that the more languages you know, the better. However, it is an absolutely horrible language and I would not suggest its use to anybody unless there is a particular reason to use it. I would suggest Ruby or Python for web development.
unless you're developing web apps you're likely not going to use ruby/python, and php is going to be your best bet