Show the Number of Users Online
Learn how to use global.asa to display the number of
users visiting your site. This tutorial can be broken
down into two sections, global.asa, and numvis.asp.
Before you can begin this tutorial, make sure your host
supports global.asa.
GLOBAL.ASA
Global.asa is defined as an optional file that defines
functions, variables, and methods that are accessible
by every ASP page within the application.The global.asa
file is often used to define and proccess session-specific
variables, which is its function in this tutorial. Global.asa
can not be written in ASP, so no tags in this file,
here's the file:
<script language="vbscript"
runat="server">
Sub Application_OnStart
Application("numvis")=0
End Sub
Sub Session_OnStart
Application.Lock
Application("numvis")=Application("numvis")
+ 1
Application.UnLock
End Sub
Sub Session_OnEnd
Application.Lock
Application("numvis")=Application("numvis")
- 1
Application.UnLock
End Sub
</script> |
English: whenever a user visits the site (triggering
a session, Session_OnStart), the server adds one to
the number of users, and whenever that user leaves (ending
the session Session_OnEnd), the server subtracts one
from the number of users. Application_OnStart applies
only to when the server is started.
NUMVIS.ASP
This file will display the number of visitors online
like so:
<html>
<head><title>Spoono Rocks!</title>
</head>
<body>
There are <%response.write(Application("numvis"))%>
online now!
</body>
</html> |
Thats it! Put that code into your site or let it stand
alone, and you'll be able to see how many visitors are
at your site.
|
