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gmp_invert

(PHP 4 >= 4.0.4, PHP 5)

gmp_invert -- Inverse by modulo

Description

resource gmp_invert ( resource a, resource b)

Computes the inverse of a modulo b. Returns FALSE if an inverse does not exist.

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 printout of the above program will be: 

9
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