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gmp_pow

Raise number into power (PHP 4 >= 4.0.4, PHP 5)
resource gmp_pow ( resource base, int exp )

Raise base into power exp.

Parameters

base

The base number.

It can be either a GMP number resource, or a numeric string given 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 806. 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