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  • login and logout session

    how to use sc_alert,sc_confirm() macros in library and include them in application.

    how to maintain session_id in database and check in every application if same session_id ->continue application else show alert message and logout how to do this.
    i tried using library and called a function
    my code is
    function check_session()
    {
    $check_active_user=[usrcheck_login];
    $check_ssn_id=session_id();
    sc_lookup(sn_data,"select sc_session from sec_logged where login='$check_active_user'");
    if(!empty({sn_data}))
    {
    $datainsession={sn_data[0][0]};
    }
    else
    {
    $datainsession='';
    }
    if($check_ssn_id!=$datainsession)
    {
    sc_alert('Session expired');
    sc_redir('login');
    }
    }

    i called this function in all applications to check session but it is not working.
    vijay
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