function checkonline($userid,$tempid=null)
{
$conn = connect();
//对于所有用户
//先设置自己为在线
$stmt = update .db_name..user set isonline='y' where userid=.$userid;
$result = query($stmt,$conn);
//info($stmt);
//如果当前用户是游客
if ($tempid != null)
{
$stmt = select tempid from .db_name..tempuser where
tempid=.$tempid;
$result = query($stmt,$conn);
//info($stmt);
//如果该游客还在线
if ($row = fetch_array($result))
{
$stmt = update .db_name..tempuser set
requesttime='.getcurrenttime().' where tempid=.$tempid;
$result = query($stmt,$conn);
//info($stmt);
}
//该游客已经离线
else
{
$stmt = insert into .db_name..tempuser
values('.$tempid.','.getcurrenttime().');
$result = query($stmt,$conn);
//info($stmt);
}
}
//查看其他用户
//普通用户
$stmt = update .db_name..user set isonline='n' where .time(). -
unix_timestamp(requesttime) > .online_duration. and usergroupid != .guest;
$result = query($stmt,$conn);
//游客
$stmt = delete from .db_name..tempuser where .time(). -
unix_timestamp(requesttime) > .online_duration;
$result = query($stmt,$conn);
disconnect($conn);
}
//得到在线人数,分用户和游客
function getonlinenumber()
{
$olnum = array();
$conn = connect();
$stmt = select count(userid) from .db_name..user where isonline='y' and
usergroupid != 4; //4 为guest的用户组id
//info ($stmt);
$result = query($stmt,$conn);
$olnum['user'] = result($result,0,count(userid));
$stmt = select count(tempid) from .db_name..tempuser;
//info ($stmt);
$result = query($stmt,$conn);
if ($row = fetch_array($result))
{
$olnum['guest'] = $row['count(tempid)'];
}
disconnect($conn);
return $olnum; //from www.w3sky.com
}
其中的connect(), disconnect(), query(),fetch_array()函数在dbmanager.inc.php中
dbmanager.inc.php
define(db_name,databasename);
define(db_user,user);
define(db_pass,pass);
define(db_host,localhost);
function connect()
{
//echo connecting to host:.host.
;
$conn = mysql_connect(db_host,db_user,db_pass);
mysql_select_db(db_name);
/*
if ($conn)
{
echo connect to database sucessfully. connection id:.$conn.
;
}
else
{
echo connect to database failed.
;
}
*/
return $conn;
}
function pconnect()
{
return mysql_pconnect(db_host,db_user,db_pass);
}
function disconnect($conn)
{
$close = mysql_close($conn);
/*
if ($close)
echo mysql database disconnected.
;
else
echo mysql database disconnecting failed. please try again.
;
*/
}
function query($stmt,$conn)
{
return mysql_query($stmt,$conn); //from www.w3sky.com
}
function fetch_array($result)
{
return mysql_fetch_array($result);
}
function fetch_row($result)
{
return mysql_fetch_row($result);
}
function num_rows($result)
{
return mysql_num_rows($result);
}
function result($result,$row,$field)
{
return mysql_result($result,$row,$field);
}
rule层:
rl_online.php
function getonline()
{
if ($userid == 2)
{
if (session_is_registered(tempuserid))
{
checkonline($userid,$tempuserid);
}
}
else
{
checkonline($userid);
}
return getonlinenumber();
}
ui层:
ui_online.php
$online_num = getonline();
echo 在线人数,注册用户.$online_num['user'].人,游客.$online_num['guest'].人;