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string gmp_strval (resource gmpnumber [, int base])
string gmp_strval
Convert GMP number to string representation in base base. The default base is 10. Allowed values for the base are from 2 to 36.
Example 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)); ?>