In a (somewhat sadistic) example of why he loves the flexibility that PHP offers Manuel Pichler has posted a code snippet showing just how much PHP can bend.

While working on PHP_Depend's parser I realized one major reason Why I love PHP, it's the flexibility of language. Even if you think you now know all ways to solve a problem, there is always one more way to solve it.

At a high level, the code example does some crazy things with variable variables, magic functions and constants to ultimately output "f:bar()".