$min
, int $max
) 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).
This function does not generate cryptographically secure values, and should not be used for cryptographic purposes. If you need a cryptographically secure value, consider using random_int(), random_bytes(), or openssl_random_pseudo_bytes() instead.
Note: On some platforms (such as Windows), getrandmax() is only 32767. If you require a range larger than 32767, specifying
min
andmax
will allow you to create a range larger than this, or consider using mt_rand() instead.
The lowest value to return (default: 0)
The highest value to return (default: getrandmax())
A pseudo random value between min
(or 0) and max
(or getrandmax(), inclusive).
<?php echo rand() . "\n"; echo rand() . "\n"; echo rand(5, 15); ?>
The above example will output something similar to:
7771 22264 11
srand() -
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