Funcții matematice
PHP Manual

mt_rand

(PHP 4, PHP 5)

mt_randGenerate a better random value

Descrierea

int mt_rand ( void )
int mt_rand ( int $min , int $max )

Many random number generators of older libcs have dubious or unknown characteristics and are slow. By default, PHP uses the libc random number generator with the rand() function. The mt_rand() function is a drop-in replacement for this. It uses a random number generator with known characteristics using the » Mersenne Twister, which will produce random numbers four times faster than what the average libc rand() provides.

If called without the optional min, max arguments mt_rand() returns a pseudo-random value between 0 and mt_getrandmax(). If you want a random number between 5 and 15 (inclusive), for example, use mt_rand(5, 15).

Parametri

min

Optional lowest value to be returned (default: 0)

max

Optional highest value to be returned (default: mt_getrandmax())

Valorile întoarse

A random integer value between min (or 0) and max (or mt_getrandmax(), inclusive)

Istoria schimbărilor

Versiunea Descriere
4.2.0Generatorul de numere aleatoare este însămânțat automat.

Exemple

Example #1 mt_rand() example

<?php
echo mt_rand() . "\n";
echo 
mt_rand() . "\n";

echo 
mt_rand(515);
?>

Exemplul de mai sus va afișa ceva similar cu:

1604716014
1478613278
6

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Funcții matematice
PHP Manual