function signMain()
{
$time = $this->microtime_float();
$timer = $this->microtime_format('Y年m月d日 H时i分s秒 x毫秒', $time);
$this->assign('timer', $timer);
$this->display('sign_main');
}
function microtime_float()
{
list($usec, $sec) = explode(" ", microtime());
return ((float)$usec + (float)$sec);
}
function microtime_format($tag, $time)
{
list($usec, $sec) = explode(".", $time);
$date = date($tag,$usec);
return str_replace('x', $sec, $date);
} 