gmp_powm

Description

resource gmp_powm ( resource base, resource exp, resource mod)

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

例子 1. gmp_powm() example


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

The printout of the above program will be:

2147483648