[PHP] require() results in session and header-sent errors

[Jempty, George]

        I'm trying to prototype the framework for some intranet
applications.  I begin with a login.php script.  At the VERY top, of this
script, I require a file as follows:

        require("intranet_ini.php");

        This contains some constant definitions, and one function; here is
the code:

        <?
          define("INTRANET_DB","intranet");
          define("INTRANET_APPS_TABLE","apps");
          define("INTRANET_APPS_FOLDER","apps");
          define("INTRANET_FOLDER","/"); //Server Root
          define("INTRANET_TEST_PASSWORD","test");
        
          function Login_Success($thisAppFolder, $thisPassword)
          {
            session_start();
                
                global $sess_TestMode;
                session_register("sess_TestMode");
                $sess_TestMode = ($thisPassword == INTRANET_TEST_PASSWORD);
                
                global $sess_AppDB;
                session_register("sess_AppDB");
                $sess_AppDB = $thisAppFolder;
          
            $appBaseUrl = INTRANET_FOLDER . INTRANET_APPS_FOLDER;
                header("Location: $appBaseUrl/$thisAppFolder/");  
          }
        ?>

        The script works fine like this: it redirects the page.  HOWEVER....

        I've decided I want to remove the function above into it's own file,
"login_funcs.php".  For the time being it will be the only function in said
file.  I cut and pasted the function, and added:

        require("login_funcs.php"); 

        directly underneath the line requiring intranet_ini.php, so in
essence I am still including the very same lines of code, in the very same
order.  However, when the Login_Success function is called, the following
errors stump me:

        Warning: Cannot send session cookie - headers already sent by
(output started at c:\intranet\login_funcs.php:1) in
c:\intranet\login_funcs.php on line 4
        
        Warning: Cannot send session cache limiter - headers already sent
(output started at c:\intranet\login_funcs.php:1) in
c:\intranet\login_funcs.php on line 4
        
        Warning: Cannot add header information - headers already sent by
(output started at c:\intranet\login_funcs.php:1) in
c:\intranet\login_funcs.php on line 15

        PS....using include() does not solve this problem.  Thanks in
advance for any ideas.

        George M Jempty
        Database Administrator
        Regional West Medical Center
        Scottsbluff, Nebraska
        308.630.2408

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