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- GMP 函数
gmp_neg
(PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)
gmp_neg — Negate number
说明
gmp_neg(GMP|int|string$num
): GMP
Returns the negative value of a number.
参数
-
num
-
GMP 对象或 int ,或数字string。
返回值
Returns -num
, as a GMP number.
范例
示例 #1 gmp_neg() example
<?php
$neg1 = gmp_neg("1");
echo gmp_strval($neg1) . "\n";
$neg2 = gmp_neg("-1");
echo gmp_strval($neg2) . "\n";
?>
以上例程会输出:
-1 1
User Contributed Notes
There are no user contributed notes for this page.官方地址:https://www.php.net/manual/en/function.gmp-neg.php