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gmp_powm

(PHP 4 >= 4.0.4, PHP 5)

gmp_powm -- Raise number into power with modulo

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

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Last updated: Thu Jul 7 19:13:47 2005 CST