Session Error Message

[ndorfnz]

I keep getting the below error message. I am new to session variables, but my initial understanding was if the session was already set, it wouldn't be set (or sent) again.

However, I keep getting below...any clues or guidance is appreciated!

session_start(): Cannot send session cache limiter - headers already sent (output started at /hsphere/local/home/garylee/ndorfnz.com/default.php:8) in /path...

What am I missing in understanding session usage?

[rincewind456]

Are you using an include file that also tries to start sessions, that's usually the reason I get the same message.

[Shrike]

Is any content being sent before session_start() is called? When you send content (e.g. with print or echo) PHP first sends the content header. Since the session module also needs to send header information, and you can only send 1 set of header information, you need to call it before sending content.

And what Rincewind said 😉

[ndorfnz]

Does it count as "header output" if I've logged in from another html page then sent user to a different page where the php tried to register them?

The login page:

<!--display the login in form!-->
  <form method=post action="../login/member.php">
  <table bgcolor=#000000>
   <tr>
     <td colspan=2>Log in:</td>
   <tr>
     <td>Username:</td>
     <td><input type=text name=username></td></tr>
   <tr>
     <td>Password:</td>
     <td><input type=password name=passwd></td></tr>
     <tr>
     <td>Remember Me:</td>
     <td><INPUT TYPE="CHECKBOX"  name="remember"  disabled;></td></tr>
   <tr>
     <td colspan=2 align=center>
     <input type=submit value="Log in"></td></tr>
 </table></form>

The member.php page

if ($username && $passwd)
// they have just tried logging in
{
    if (login($username, $passwd))//FUNCTION CALL TO CHECK DB
    {
      // if they are in the database register the user id

  $valid_user = $username;
  session_register("valid_user");
  //JUST ABOVE HERE IS WHERE ERROR IS OCCURRING.
  echo "<a class=dark href=/content/rlogs/index.php?pagename=logs&subMenu=logs>Training Logs</a>";
}
else
{
  // unsuccessful login

  echo "<p>You could not be logged in.
        You must be logged in to view this page.</p>";
  exit;
}
}

Is this correct?

What am I missing (or in need or learning!)

Thanks much!

[ndorfnz]

Ok, I am seeing some light although dim!

I had some javascript and some css links. I move these down and did not get the errors. Kinda strange the way the page "flashes" and then all of a sudden formats now that these are lower in the page?

Also, upon moving from page to page it appears I do not have access to the variables?

Tried using $_POST['username'] but my script doesn't see anything. Am I correct in thinking these "posted variables" via the form and session register should be available throughout my site? Or do I need to start_session on each page (at the top) to pick up these???

Thanks.

[rincewind456]

ndorfnz wrote:

Also, upon moving from page to page it appears I do not have access to the variables?

Tried using $_POST['username'] but my script doesn't see anything. Am I correct in thinking these "posted variables" via the form and session register should be available throughout my site? Or do I need to start_session on each page (at the top) to pick up these???

Thanks.

There's a little more to it than that take a look at the manual for Sessions. This will help you get a better understanding of sessions