srand() - math

Seeds the random number generator with seed
   or with a random value if no seed is given.

Parameters : 
 seed - An arbitrary integer seed value. 

Syntax

void srand
     ([ int $seed
   ] )

Example

<?php// seed with microsecondsfunction make_seed(){  list($usec, $sec) = explode(' ', microtime());  return $sec + $usec * 1000000;}srand(make_seed());$randval = rand();?>

Output / Return Value

Limitations

Alternatives / See Also

Reference