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php实现的在线人员统计

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 2014-12-14 11:48:12 转载来源: 网络整理/侵权必删

本文为大家讲解的是php实现的在线人员统计代码,感兴趣的同学参考下. //增加用户     function AddUser($username){      global $db;     $Ip=getenv('REMOTE_ADDR');     $Ip1 = getenv('HTTP_X_FORWARDED_FOR');     if (($Ip1 != "") && ($Ip1 != "unknown")) $Ip=$Ip1;     $current_time=date("Y-m-d H

本文为大家讲解的是php实现的在线人员统计代码,感兴趣的同学参考下.

//增加用户    
function AddUser($username){     
global $db;    
$Ip=getenv('REMOTE_ADDR');    
$Ip1 = getenv('HTTP_X_FORWARDED_FOR');    
if (($Ip1 != "") && ($Ip1 != "unknown")) $Ip=$Ip1;    
$current_time=date("Y-m-d H:i:s");    
$SQL="select user from class_online where user='$username'";     
$res=mysql_query($SQL,$db);     
$row=@mysql_num_rows($res);     
if($row==0) {    
$SQL="insert into class_online (user,ip,lasttime) values('$username','$Ip','$current_time')";     
mysql_query($SQL,$db);    
}    
}    
//更新在线用户名单     
function UpdateMember(){     
global $db;    
$SQL="delete from class_online where UNIX_TIMESTAMP()-UNIX_TIMESTAMP(lasttime)>180"; //3分钟不活动则退出     
//echo $SQL;    
mysql_query($SQL,$db);    
}    
//更新在线状态     
function UpdateOnline($username){     
global $db;    
$current_time=date("Y-m-d H:i:s");;    
$SQL="update class_online set lasttime='$current_time' where user='$username'";     
$res=mysql_query($SQL,$db);     
}     
//删除用户    
function OutOneUser($user){     
global $db;    
$SQL="delete from class_online where user='$user'";     
mysql_query($SQL,$db);     
return true;    
}     
//检查是否在线     
function CheckUser($user){     
global $db;    
$SQL="select user from class_online where user='$user'";     
$res=mysql_query($SQL,$db);     
$row=mysql_num_rows($res);     
if($row>0) return true;     
else return false;     
}     
//取在线名单     
function ReadOnlineName(){     
global $db;     
$SQL="select * from class_online";    
$res=mysql_query($SQL,$db);    
while($row=mysql_fetch_array($res)){     
$result[]=$row[user];     
}     
return $result;     
}     


标签: php 实现 在线 人员 统计


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