Getting source from remote file

Hi guys and girls, okay, this is a dumbnut question I wouldn't bother asking.... but I really did hit a spot now where I am totally wedged up in my head and can't think straight anymore... so the, I bet easy, answer to my question escapes me. What I am trying to do is the following: Read the contents of a remote file via file() So I do $content = file($url); Now $content holds the HTML source of the page. Now this page has some DIVs in it with a class "myclass123" (just for this purpose) Now I want to get the content of these divs into a variable / some variables. No more, no less. Can anybody please direct me towards the answer? Damn, I must sleep more at night, so I can think straight at work.... Any help is very much appreciated! Thanks! Chris