-----Original Message----- From: A.a.k [mailto:blueman@xxxxxxxxx] Sent: 10 September 2009 08:27 AM To: php-general@xxxxxxxxxxxxx Subject: header problem hello I recentrly uploaded my project from localhost to a hosting and found many errors and warnings which didnt have in local. one of the most annoying one is header('Location xxx'). I have used header to redirect users from pages, and kinda used it alot. i know about the whitespace causing warning, but most of the pages i'm sending users got html and php mixed so i'm confused about how to remove whitespace in a html/php file. the error is : Warning: Cannot modify header information - headers already sent by .... here is a simple example, user update page : if($valid) { $msg='111'; $user->dbupdate(); header("Location: /admin/index.php?msg=$msg"); } else { foreach($errors as $val) echo '<p id="error">'.$val.'</p>'; } and on admin index i get $msg and display it. <html> ...... //lots of stuff <?php $msg = $_GET['msg']; switch($msg){ case '111' echo '<p> </p>'; break; case '421':... } ?> // more html and php how can i fix this? -- It's possible that on your localhost you have output_buffering set on either in php.ini or in a .htaccess, which would avoid the displayed error about headers. If it's switched on locally and off for your host server then you'll get the problem you reported. Check that this is off locally (use phpinfo) so that you can be sure your code is working properly before you upload. Alternatively if you want to be able to do a redirect after you've already started your output (this is sometimes done for error handling) you could use ob_start() to start output buffering, ob_end_clean() to clear the output buffer and start again, and ob_flush() to send the output buffer. If you want to continue using output buffering after an ob_end_clean() you'll have to do an ob_start() again. Cheers Arno -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
