用于base_convert的PHP反函数？

Question

I have to do arithmetic with some ternary (base 3) numbers. I know I can use base_convert to get from a ternary string ("2001022210") to an integer. Is there an existing function to do the inverse?

I want "some_function" such that:

$someInteger = base_convert("2001022210", 10, 3);
some_function($someInteger);

answers "2001022210". I'm happy to provide extra arguments ...

some_function($someInteger, 3);
some_function($someInteger, 3, 10);

I know I can code this myself, but I'm hoping it's already there.

Answer 1

$someInteger is now in base 3... so just do $base10Int = base_convert($someInteger, 3, 10); to get it back.