PHP 7.0.6 Released

    gmp_random

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

    gmp_random — Random number

    Description

    GMP gmp_random ([ int $limiter = 20 ] )

    Generate a random number. The number will be between zero and the number of bits per limb multiplied by limiter. If limiter is negative, negative numbers are generated.

    A limb is an internal GMP mechanism. The number of bits in a limb is not static, and can vary from system to system. Generally, the number of bits in a limb is either 16 or 32, but this is not guaranteed.

    Parameters

    limiter

    The limiter.

    Either a GMP number resource in PHP 5.5 and earlier, a GMP object in PHP 5.6 and later, or a numeric string provided that it is possible to convert the latter to a number.

    Return Values

    A random GMP number.

    Examples

    Example #1 gmp_random() example

    <?php
    $rand1     = gmp_random(1); // random number from 0 to 1 * bits per limb
    $rand2 = gmp_random(2); // random number from 0 to 2 * bits per limb

    echo gmp_strval($rand1) . "\n";
    echo     gmp_strval($rand2) . "\n";
    ?>

    The above example will output:

    1915834968
8642564075890328087

    User Contributed Notes

    asphp at dsgml dot com
    1 month ago
    Warning: Do not use this function.

    Use gmp_random_bits() or gmp_random_range() instead.

    The documentation and the code for this function do NOT match, and in any case this function is quite useless.
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