This function is production ready and you can use it in any of your application which mainly works with these date difference. I have found it somewhere in web, just forgot the source. Thanks to the unknown author of this excellent function.

The rest of the post is the function itself that takes in the interval string (formatting), the start date, end date and whether to use timestamps or not.

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.