PHP: gmp_random

gmp_random

(PHP 4 >= 4.0.4, PHP 5)

gmp_random -- Random number

Description

resource gmp_random ( int limiter )

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.

例子 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 printout of the above program might be:

1915834968
8642564075890328087


	downloads \| documentation \| faq \| getting help \| mailing lists \| reporting bugs \| php.net sites \| links \| my php.net

search for in the