To get any root of a number your can use the pow() function:
pow(8, 1/3)
which gives you the third root of eight.
Jouhni
PHP - Manual: sqrt
2024-12-22
(PHP 4, PHP 5, PHP 7, PHP 8)
sqrt — 平方根
$arg
): float
返回 arg
的平方根。
arg
要处理的参数
返回 arg
的平方根,负数时返回 NAN
。
示例 #1 sqrt() 例子
<?php
// Precision depends on your precision directive
echo sqrt(9); // 3
echo sqrt(10); // 3.16227766 ...
?>
To get any root of a number your can use the pow() function:
pow(8, 1/3)
which gives you the third root of eight.
Jouhni