Mgccl let us know about a new bit of functionality he's worked up to calculate a higher precision value of Pi than the built-in PHP function can.

I want to release some Benchmark system can be uploaded to any web host and check how good the web hosting is. Pi (Ï') calculations spread widely as one of the most popular CPU benchmark system, that's why I have created a Pi calculator that can get to the accuracy you want. For now, there is still one thing I'm not sure yet, I will explain it after show you the code.

The function is provided (that takes in the precision value you want) and a brief explanation of what it does differently and a reason why to use it over the built-in function.