(PHP 7, PHP 8)
random_int — Get a cryptographically secure, uniformly selected integer
$min
, int $max
): intGenerates cryptographic random integers that are suitable for use where unbiased results are critical, such as when shuffling a deck of cards for a poker game.
The sources of randomness used for this function are as follows:
Note: Although this function was added to PHP in PHP 7.0, a » userland implementation is available for PHP 5.2 to 5.6, inclusive.
min
The lowest value to be returned.
max
The highest value to be returned.
A cryptographically secure, uniformly selected integer from the closed interval
[min
, max
]. Both
min
and max
are
possible return values.
max
is less than min
, an
ValueError will be thrown.
Version | Description |
---|---|
8.2.0 | In case of a CSPRNG failure, this function will now throw a Random\RandomException. Previously a plain Exception was thrown. |
Example #1 random_int() example
<?php
var_dump(random_int(100, 999));
var_dump(random_int(-1000, 0));
?>
The above example will output something similar to:
int(248) int(-898)