= 4.0.4, PHP 5, PHP 7, PHP 8)gmp_pow — Raise number into power說明gmp_pow(GMP|int|string $num, int $exponent): GMPRaise num into power ex">
(PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)
gmp_pow — Raise number into power
num
The base number.
GMP 對象或 int ,或數(shù)字string。
exponent
The positive power to raise the num
.
The new (raised) number, as a GMP number. The case of
0^0
yields 1.
示例 #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";
?>
以上例程會輸出:
2147483648 1