For the Pi challenge, it'd be MUCH easier if we could use the BCMath extension–Since it's bundled with PHP (it simply needs to be enabled at compile time [--enable-bcmath]) it's not entirely hard to set up.

I have a working version under BCMath, I just didn't realize it wasn't enabled on this server.

Also worth mentioning is that Ruby provides this as a default extension, it's simply enabled in ruby.

Also worth mentioning is that Ruby provides this as a default extension, it's simply enabled in ruby.