PHP. Руководство по PHP. 2005

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.

Пример 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

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