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PHP5中文手册

gmp_abs

(PHP 4 >= 4.0.4, PHP 5)

gmp_abs — Absolute value

说明

resource gmp_abs ( resource $a )

Get the absolute value of a number.

参数

a

It can be either a GMP number resource, or a numeric string given that it is possible to convert the latter to a number.

返回值

Returns the absolute value of a , as a GMP number.

范例

Example#1 gmp_abs() example

<?php
$abs1 
gmp_abs("274982683358");
$abs2 gmp_abs("-274982683358");

echo 
gmp_strval($abs1) . "\n";
echo 
gmp_strval($abs2) . "\n";
?>

上例将输出:

274982683358
274982683358