Search Engine for Programmers

You're a programmer working in PHP and need to create a bubble sort. Rather than reinvent the wheel, go to Koders, the source code search engine. The home page is quite plain, ala Google. Pick the language, even the license/s you're operating with. Type in your search criteria and you have links to the code you want. A long time ago I used to do some programming and this sure would have been a nice search engine to have.