rand
(PHP 4, PHP 5)
rand — Generate a random integer
Description
int rand
( void
)
int rand
( int $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).
Note:
On some platforms (such as Windows), getrandmax()
is only 32768. If you require a range larger than 32768, specifying
min
and max
will allow
you to create a range larger than this, or consider using
mt_rand() instead.
Note: As of PHP 4.2.0, there is no need
to seed the random number generator with srand() or
mt_srand() as this is now done automatically.
Parameters
-
min
-
The lowest value to return (default: 0)
-
max
-
The highest value to return (default: getrandmax())
Return Values
A pseudo random value between min
(or 0) and max
(or getrandmax(), inclusive).
Examples
Example #1 rand() example
<?php
echo rand() . "\n";
echo rand() . "\n";
echo rand(5, 15);
?>
The above example will output
something similar to:
Load balance : Server 02
