gmp_pow()

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

Raise number into power

说明

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

Raise$baseinto power$exp.

参数

$base

The base number.

可以是一个 GMP数据resouce，或一个可以转换为数值的字符串。

$exp

The positive power to raise the$base.

返回值

The new(raised)number, as a GMP number. The case of0^0yields 1.

范例

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";
?>

以上例程会输出：

2147483648
1

A Sample code can be shown as
<?php
echo gmp_strval(gmp_pow(4,4)); //This would give the answer as 256
?>