= 4.0.4, PHP 5, PHP 7, PHP 8)gmp_powm — Raise number into power with modulo說(shuō)明gmp_powm(GMP|int|string $num, GMP|int|string $exponent, G">

gmp_powm

(PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)

gmp_powm — Raise number into power with modulo

說(shuō)明

gmp_powm(GMP|int|string $num, GMP|int|string $exponent, GMP|int|string $modulus): GMP

Calculate (num raised into power exponent) modulo modulus. If exponent is negative, result is undefined.

參數(shù)

num

The base number.

GMP 對(duì)象或 int ，或數(shù)字string。

exponent

The positive power to raise the num.

GMP 對(duì)象或 int ，或數(shù)字string。

modulus

The modulo.

GMP 對(duì)象或 int ，或數(shù)字string。

返回值

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

范例

示例 #1 gmp_powm() example

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

以上例程會(huì)輸出：

2147483648