gmp_invert

(PHP 4 >= 4.0.4, PHP 5)

gmp_invert — Inverse by modulo

说明

resource gmp_invert ( resource $a , resource $b )

Computes the inverse of a modulo b .

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.
b: 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

A GMP number on success or FALSE if an inverse does not exist.

范例

Example#1 gmp_invert() example


<?php
echo gmp_invert("5", "10"); // no inverse, outputs nothing, result is FALSE
$invert = gmp_invert("5", "11");
echo gmp_strval($invert) . "\n";
?>

上例将输出：