Session Trouble - Installation?

[ollmorris]

I have some code:

session_start();session_register("username","password");
$session = session_id();

Everytime I log in correctly this code is initialized and my logged in message is displayed. However I also get an error message:

Warning: Cannot send session cookie - headers already sent by (output started at C:\apache\htdocs\tmpl8\examples\login.php:3) in C:\apache\htdocs\tmpl8\examples\login.php on line 6

Warning: Cannot send session cache limiter - headers already sent (output started at C:\apache\htdocs\tmpl8\examples\login.php:3) in C:\apache\htdocs\tmpl8\examples\login.php on line 6

LINE 6 IS MY CODE ABOVE.

Is the problem to do with my PHP.INI file? If so can someone give me a reliable article for installation of APACHE 2.0.35, PHP 4.1.2 and MySQL 3.23.49.

[jayant]

you have started to output when this line 6 was called and hence it was unable to add to headers which are now already sent.

do not output anything until that line.

also note sometimes people leave a blank line before starting <? , so if thats the case with you, just remove that blank line in the starting 🙂

[ollmorris]

Sorry, but what should be done. My whole code is:

$db = mysql_connect($cfgServerHost, $cfgServerUser, $cfgServerPassword);
mysql_select_db($cfgDbDatabase,$db);$result = mysql_query("SELECT * FROM members WHERE
username='$username' AND password='$password'");$num = mysql_num_rows($result);
if($submit){if($num != 0){session_start();session_register("username","password");
$session = session_id();echo "Login Correct<br>Click <a href=test.php?$session>here</a>";
} else {echo "<p align=center>Sorry but your login failed!";}}

I am new to sessions so don't know what to do.

Thank you

[suspy]

at the beginning of the code add ob_start();
at the end of the code add ob_end_clean();

[ollmorris]

I can't get that ob_start(); etc to work. Is there anythng else which can be done?

[suspy]

You can't output anything before session_start();
I can't understand why ob_start() etc can't work.
You should refer to php manual about Output Control Functions.

[ollmorris]

I did this:

ob_start();session_start();ob_end_clean();

and it works, no error. Was that right?

Is there some sort of session_exists(NAME) or something I can use to check if a session is there?

[jayant]

session_id() Get and/or set the current session id.

session_is_registered() Find out if a variable is registered in a session.