If called without the optional min
,
max
arguments rand()
returns a pseudo-random integer between 0 and
RAND_MAX. If you want a random number
between 5 and 15 (inclusive), for example, use rand (5,
15).
Bemærk: On some platforms (such as Windows) RAND_MAX is only 32768. If you require a range larger than 32768, specifying
min
andmax
will allow you to create a range larger than RAND_MAX, or consider using mt_rand() instead.
Bemærk: Fra PHP 4.2.0, er det ikke nødvendigt at salte generatoren til tilfældige numre med srand() eller mt_srand(), da det nu gøres automatisk.
min
The lowest value to return (default: 0)
max
The highest value to return (default: RAND_MAX)