(PHP3 >= 3.0.6, PHP4 )
void mt_srand (int seed)
void mt_srand
Seeds the random number generator with seed.
// seed with microseconds since last "whole" second mt_srand ((double) microtime() * 1000000); $randval = mt_rand();
See also mt_rand(), mt_getrandmax(), srand(), rand(), and getrandmax().