I have seen various statistics on language popularity based on search engine results, number of books published, open source projects developed, etc. but none of them is specific for web development (on the server side). Almost all of them shows Java, C and C++ as the most popular. I wonder how PHP, which was created explicitly for web development and is rarely used for other purposes, stack up against these languages, Java in particular.
Are there any statistics comparing this languages (not frameworks or IDEs) in a web development context?