numeral-system
There are 3 repositories under numeral-system topic.
Anizoptera/Math
AzaMath - Anizoptera CMF mathematic component. Provides functionality to work with large numbers with arbitrary precision (using BCMath) and universal mumeral systems conversions (supported bases from 2 to 62 inclusive, and custom systems; pure PHP, but can use GMP and core functions for speed optimization).
kalenchukov/NumeralSystem
Системы счисления (Number systems)
machinateur/roman-numerals
A PHP library to convert ordinary integers to roman numerals (and back). Just like that.