I have been programming mostly with PHP for a little over 2 years now and I was wondering about a good way to get certified as a programmer. The college I am currently in offers web design classes but that is using mostly HTML, so I don't think that would do much for me. I have done plenty of freelance work and most people just ask to see examples of my work and that usually is good enough to land me the job but occasionally I get clients that look for formal schooling in web programming and I don't have any to offer. I have seen that w3schools offers certificates in programming languages but I don't want to waist my money on it if that in the long run doesn't count for anything. So my questions are, do the w3schools certificates count for anything in the programming world? Or are there other classes/schools that anybody recommends that look good on a resume for a programmer?