function?checkOnline($userid,$tempid=null)

{

$conn?=?connect();

//對于所有用戶

//先設置自己為在線

$stmt?=?"UPDATE?".DB_NAME.".USER?SET?IsOnline='Y'?WHERE?UserID=".$userid;

$result?=?query($stmt,$conn);

//info($stmt);

//如果當前用戶是游客

if?($tempid?!=?null)

{

$stmt?=?"SELECT?TempID?FROM?".DB_NAME.".TEMPUSER?WHERE

TempID=".$tempid;

$result?=?query($stmt,$conn);

//info($stmt);

//如果該游客還在線

if?($row?=?fetch_array($result))

{

$stmt?=?"UPDATE?".DB_NAME.".TEMPUSER?SET

RequestTime='".getCurrentTime()."'?WHERE?TempID=".$tempid;

$result?=?query($stmt,$conn);

//info($stmt);

}

//該游客已經離線

else

{

$stmt?=?"INSERT?INTO?".DB_NAME.".TEMPUSER

VALUES('".$tempid."','".getCurrentTime()."')";

$result?=?query($stmt,$conn);

//info($stmt);

}

}

//查看其他用戶

//普通用戶

$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);

}

//得到在線人數，分用戶和游客

function?getOnlineNumber()

{

$olnum?=?array();

$conn?=?connect();

$stmt?=?"SELECT?COUNT(UserID)?FROM?".DB_NAME.".USER?WHERE?IsOnline='Y'?AND

UserGroupID?!=?4";?//4?為guest的用戶組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()函數在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層：

rl_online.PHP

function?getOnline()

{

if?($userid?==?2)

{

if?(session_is_registered("tempuserid"))

{

checkOnline($userid,$tempuserid);

}

}

else

{

checkOnline($userid);

}

return?getOnlineNumber();

}

ui層：

ui_online.PHP

$online_num?=?getOnline();

echo?"在線人數，注冊用戶".$online_num['user']."人，游客".$online_num['guest']."人";

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