Google Code Search

I'm not sure when this came out, but Google now has source code search. These guys never stop amazing me.

So what you need to do now is create a new bookmark in firefox. Point it to: http://www.google.com/codesearch?hl=en&q=+lang:php+%s

Give it a name and in the keyword field, put something like 'phpcode'. Save it.

Now in your address bar, type 'phpcode array_merge' and return.

You'll see a page full of source code snippets that use the array_merge() function. Quick reference next time you need some sample code.