PHP srand() Function
ExampleGet your own PHP Server
Seed the random number generator:
<?php
srand(mktime());
echo(rand());
?>
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Definition and Usage
The srand() function seeds the random number generator (rand()).
Tip: From PHP 4.2.0, the random number generator is seeded automatically and there is no need to use this function.
Syntax
srand(seed);
Parameter Values
Parameter | Description |
---|---|
seed | Optional. Specifies the seed value |
Technical Details
Return Value: | None |
---|---|
Return Type: | - |
PHP Version: | 4+ |
PHP Changelog: | PHP 7.1.0: srand() has been an alias of
mt_srand(). PHP 4.2.0: Random number generator is now seeded automatically. |
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