PHP Manual
Prev |  | Next

# rand

(PHP 3, PHP 4 )

rand -- Generate a random value

## Description

int rand ( [int min, int max])

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

In older versions of PHP, you had to seed the random number generator before use with srand(). Since 4.2.0 this is no longer necessary.

> Note: In versions before 3.0.7 the meaning of `max` was `range`. To get the same results in these versions the short example should be `rand (5, 11)` to get a random number between 5 and 15.

See also srand(), getrandmax(), and mt_rand().

Prev | Home | Next
rad2deg | Up | round