gmp_powm

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

gmp_powm — Raise number into power with modulo

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.

num

The base number.

GMP 對像或 int ，或數字string。

exponent

The positive power to raise the num.

GMP 對像或 int ，或數字string。

modulus

The modulo.

GMP 對像或 int ，或數字string。

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

示例 #1 gmp_powm() example


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

以上例程會輸出：

2147483648