Php/docs/function.gmp-pow

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gmp_pow

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

gmp_powRaise number into power


Description

gmp_pow ( GMP $base , int $exp ) : GMP

Raise base into power exp.


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.


Return Values

The new (raised) number, as a GMP number. The case of 0^0 yields 1.


Examples

Example #1 gmp_pow() example

<?php$pow1 = gmp_pow("2", 31);echo gmp_strval($pow1) . "\n";$pow2 = gmp_pow("0", 0);echo gmp_strval($pow2) . "\n";$pow3 = gmp_pow("2", -1); // Negative exp, generates warningecho gmp_strval($pow3) . "\n";?>

The above example will output:


2147483648
1