显示在线人数

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<%
NowUrl=request.servervariables("HTTP_REFERER")
UserName = session("Wenday_sys_User")
if UserName="" then
UserName="客人"
end if
call sqlonline()
Response.Write "document.write(" & chr(34) & " <font color=#000000>当前在线 "& online() &"人</font>"& chr(34) & ")"
''Response.Write "document.write(" & chr(34) & " <a href=count/ShowOnline.asp title=查看在线列表><font color=#000000>当前在线"& online() &"人</font></a>"& chr(34) & ")"
sub sqlonline()
dim statuserid
statuserid=replace(Request.ServerVariables("REMOTE_HOST"),".","")
Response.Cookies("Wenday_Sys")("onlineid")=statuserid
sql="select id from "&CategoryName&"_online where id="&cstr(request.cookies("Wenday_Sys")("onlineid"))
set rs=conn.execute(sql)
if rs.eof and rs.bof then
sql="insert into "&CategoryName&"_online(id,UserName,ip,startime,lastimebk,browser,actforip,Now_Url) values ("&statuserid&",''"&UserName&"'',''"&Request.ServerVariables("REMOTE_HOST")&"'',now(),now(),''"&Request.ServerVariables("HTTP_USER_AGENT")&"'',''"&Request.ServerVariables("HTTP_X_FORWARDED_FOR")&"'',''"&request.servervariables("HTTP_REFERER")&"'')"
else
sql="update "&CategoryName&"_online set lastimebk=now(),UserName=''"&UserName&"'' where id="&cstr(request.cookies("Wenday_Sys")("onlineid"))
end if
conn.execute(sql)
set rs=nothing
Rem 删除超时用户
sql="Delete FROM "&CategoryName&"_online WHERE DATEDIFF(''s'', lastimebk, now()) > "&kicktime&"*60"
Conn.Execute sql
end sub
function online()
dim tmprs
sql="Select count(id) from "&CategoryName&"_online"
set tmprs=conn.execute(sql)
online=tmprs(0)
set tmprs=nothing
if isnull(online) then online=0
end function
CloseDatabase
%>