gmp_powm

Raise number into power with modulo (PHP 4 >= 4.0.4, PHP 5)
resource gmp_powm ( resource base, resource exp, resource mod )

Calculate (base raised into power exp) modulo mod. If exp is negative, result is undefined.

例 688. gmp_powm() example

<?php
$pow1
= gmp_powm("2", "31", "2147483649");
echo
gmp_strval($pow1) . "\n";
?>

The printout of the above program will be:

2147483648