密码随机函数

function make_password()
{$pw_length=24;//密码长度
$low_ascii_bound=50;
$upper_ascii_bound=122;
$notuse=array(58,59,60,61,62,63,64,73,79,91,92,93,94,95,96,108,111);
while($i<$pw_length)
{mt_srand((double)microtime()*1000000);
$randnum=mt_rand($low_ascii_bound,$upper_ascii_bound);
if(!in_array($randnum,$notuse))
{$password1=$password1.chr($randnum);
$i ;
}
}
return $password1;}
$password=make_password();//调用
?>