gmp_invert

    (PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)

    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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