(PHP 4 >= 4.0.4)
Convert GMP number to string representation in base base. The default base is 10. Allowed values for the base are from 2 to 36.
P°φklad 1. Converting a GMP number to a string
<?php $a = gmp_init("0x41682179fbf5"); printf ("Decimal: %s, 36-based: %s", gmp_strval($a), gmp_strval($a,36)); ?>