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gmp_pow

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

gmp_pow — Raise number into power

Description

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

Raise base into power exp.

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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.

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Return Values

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

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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";
$pow3 = gmp_pow("2", -1); // Negative exp, generates warning
echo gmp_strval($pow3) . "\n";
?>

The above example will output:

2147483648
1

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Document created the 30/01/2003, last modified the 26/10/2018
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References

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