Php/docs/function.gmp-powm
gmp_powm
(PHP 4 >= 4.0.4, PHP 5, PHP 7)
gmp_powm — Raise number into power with modulo
Description
Calculate (base
raised into power
exp
) modulo mod
. If
exp
is negative, result is undefined.
Parameters
base
The base number.
Either a GMP number resource in PHP 5.5 and earlier, a GMP object in PHP 5.6 and later, or a numeric string provided that it is possible to convert the latter to a number.
exp
The positive power to raise the
base
.Either a GMP number resource in PHP 5.5 and earlier, a GMP object in PHP 5.6 and later, or a numeric string provided that it is possible to convert the latter to a number.
mod
The modulo.
Either a GMP number resource in PHP 5.5 and earlier, a GMP object in PHP 5.6 and later, or a numeric string provided 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