floating point - Convert exponential number to decimal in php

Question

I have a floating point number in exponential format i.e. 4.1595246940817E-17 and I want to convert it into decimal number like 2.99 etc.

Any help will be appreciated.

format_number() sprintf() don't seem to be working for me.

Answer 1

You need a better math extension like BC Math, GMP... to handle the more precise precision.

Limitation of floating number & integer