How can I make a variable static (or “global”) in Classic ASP?

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走了就别回头了
走了就别回头了 2021-01-12 22:55

I want to make my variable static or \"global\" - so the same effect as static in .NET; every session that accesses it gets the same result, and if one session modifies it i

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  • 2021-01-12 23:48

    using a session variable

    Session("myVariableName") = "my new value"
    

    the scope will be the user...

    if you want to wide the scope to ALL users that are in the website, then you use an Application variable

    Application("myVariableName") = "my new value"
    

    you can reset or handle this in the global.asa file as well

    This is a common thing to do:

    global.asa file:

    <script language="vbscript" runat="server">
    
    Sub Application_OnStart
      Application("visitors") = 0
    End Sub
    
    Sub Session_OnStart
      Application.Lock
      Application("visitors") = Application("visitors") + 1
      Application.UnLock
    End Sub
    
    Sub Session_OnEnd
      Application.Lock
      Application("visitors") = Application("visitors") - 1
      Application.UnLock
    End Sub
    
    </script>
    

    default.asp file:

    <html>
     <head>
     </head>
     <body>
      <p>There are <%response.write(Application("visitors"))%> online now!</p>
     </body>
    </html>
    
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  • 2021-01-12 23:51

    If you want to have a variable that is accessible application wide, you can use the application object. Be sure to use Application.Lock/Unlock to prevent any problems.

    Application.Lock
    Application("MyVariable") = "SomeValue"
    Application.Unlock
    
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