rand()

rand() — Generate a random integer.

Built-in function of PHP 8.5. The manual lists it as available in PHP 4, PHP 5, PHP 7, PHP 8. This page is the reference card: signature, parameters and return value, plus the changelog and the example the manual provides.

What it does

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

Signature

rand(): int rand(int $min, int $max): int

Parameters

Return value

A pseudo random value between min (or 0) and max (or getrandmax(), inclusive).

Example

A runnable snippet:

echo rand(), "\n"; echo rand(), "\n"; echo rand(5, 15), "\n";

Output:

7771 22264 11

Changelog

See also

srand(), getrandmax(), mt_rand(), random_int(), random_bytes()

All PHP 8.5 built-in functions

Reference card built from the PHP manual page rand() (PHP documentation, CC BY 3.0). The page is generated from the manual, so the wording of the parameter and return value text follows php.net.