gmp_invert

(PHP 4 >= 4.0.4, PHP 5, PHP 7)

gmp_invert — Inverse by modulo

Description

gmp_invert ( GMP|int|string $num1 , GMP|int|string $num2 ) : GMP|false

Computes the inverse of num1 modulo num2.

Parameters

num1

A GMP object, an int or a numeric string.

num2

A GMP object, an int or a numeric string.

Return Values

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

Examples

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";
?>

The above example will output:

9

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https://www.php.net/manual/en/function.gmp-invert.php