PHP 忒聊
綴豖
ヶ輛
srand
(PHP 3, PHP 4)
Description
Seeds the random number generator with seed.
// seed with microseconds function make_seed() {list($usec, $sec) = explode(' ', microtime()); return (float) $sec + ((float) $usec * 100000);} srand(make_seed()); $randval = rand();
蛁: Since PHP 4.2.0 it's no longer necessary to seed the random number generator before using it.
See also rand(), getrandmax() and mt_srand().
綴豖
れ萸
ヶ輛
sqrt
奻珨撰
tan