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Raise number into power with modulo


gmp_powm

(PHP 4 >= 4.0.4, PHP 5)

gmp_powmRaise 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.

Parameters

base

The base number.

It can be either a GMP number resource, or a numeric string given that it is possible to convert the latter to a number.

exp

The positive power to raise the base.

It can be either a GMP number resource, or a numeric string given that it is possible to convert the latter to a number.

mod

The modulo.

It can be either a GMP number resource, or a numeric string given that it is possible to convert the latter to a number.

Return Values

The new (raised) number, as a GMP number.

Examples

Example #1 gmp_powm() example

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

The above example will output:

 2147483648 



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