is this seriuse

[hisham777]

i want to know if this is seruise problem.

Warning: Cannot modify header information - headers already sent by
Notice: A session had already been started - ignoring session_start()


and if its seriuse how to fix it?


thanks

[_matrix_]

Hi,

<?php ob_start(); ?>

at the top of yer page(s) will stop the headers allready sent problem.


hth

[hisham777]

cool it fixed the problem thanks

but what about the session

Notice: A session had already been started - ignoring session_start()

[learningAlways]

Are you trying to redirect your visitors to a different page?

[hisham777]

if the condition have not met yes

if the condition met continue
ob_start();
session_start();
header("Cache-control: private");
if((!isset ($_SESSION["myusername"])))
header("Location: login.php");

[trib4lmaniac]

The first error is because you have sent a header after you have started your output. This is solved with either output buffers (as you've done), or - as is more preferable - by simply moving session_start() to the very top of your script.

The second error means that session_start() has been called twice, the second is obviously superfluous and should be scrapped.
PHP may be configured to start a session automatically, in which case you can use the following:

if(!ini_get('session.auto_start')) {
    session_start();
}