PHP mt_srand() Function
Example
Seed the random number generator:
<?php
mt_srand(mktime());
echo(mt_rand());
?>
Run example »
Definition and Usage
The mt_srand() function seeds the Mersenne Twister random number generator.
Tip: From PHP 4.2.0, the random number generator is seeded automatically and there is no need to use this function.
Syntax
mt_srand(seed);
| Parameter | Description |
|---|---|
| seed | Optional. Specifies the seed value |
Technical Details
| Return Value: | None |
|---|---|
| Return Type: | - |
| PHP Version: | 4+ |
| PHP Changelog: | PHP 4.2.0: Random number generator is now seeded automatically |
PHP Math Reference
