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PHP gmp_random_bits

PHP original manual for gmp_random_bits [ show | php.net ]

gmp_random_bits

(PHP 5 >= 5.6.3, PHP 7)

gmp_random_bits — Random number

Description

GMP gmp_random_bits ( int $bits )

Generate a random number. The number will be between 0 and (2 ** bits) - 1.

bits must greater than 0, and the maximum value is restricted by available memory.

Parameters

bits

The number of bits.

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_bits() example

<?php
$rand1 = gmp_random_bits(3); // random number from 0 to 7
$rand2 = gmp_random_bits(5); // random number from 0 to 31

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

The above example will output:

3
15