做一个在线人数统计的功能

mm12580

用mysql？不用那么麻烦

mm12580

$online_log = "count.dat"; //保存人数的文件,
$timeout = 1500;//30秒内没动作者,认为掉线
$entries = file($online_log);
$temp = array();
for ($i=0;$i<count($entries);$i++) {
$entry = explode(",",trim($entries[$i]));
if (($entry[0] != getenv('REMOTE_ADDR')) && ($entry[1] > time())) {
  array_push($temp,$entry[0].",".$entry[1]."\n"); //取出其他浏览者的信息,并去掉超时者,保存进$temp
}
}
array_push($temp,getenv('REMOTE_ADDR').",".(time() + ($timeout))."\n"); //更新浏览者的时间
$users_online = count($temp); //计算在线人数
$entries = implode("",$temp);
//写文件
$fp = fopen($online_log,"w");
flock($fp,LOCK_EX); //flock()
fputs($fp,$entries);
flock($fp,LOCK_UN);
fclose($fp);
echo "当前有".$users_online."人在使用夹子换肤";