Tickets :: [#9003] Cannot modify header information - headers already sent

6.0.0-beta1

7/27/25

Summary	Cannot modify header information - headers already sent
Queue	Horde Groupware Webmail Edition
Queue Version	1.2.6
Type	Bug
State	Not A Bug
Priority	2. Medium
Owners
Requester	chris (at) vandenberghe (dot) org
Created	05/03/2010 (5564 days ago)
Due
Updated	07/28/2010 (5478 days ago)
Assigned	05/03/2010 (5564 days ago)
Resolved	05/03/2010 (5564 days ago)
Github Issue Link
Github Pull Request
Milestone
Patch	No

07/28/2010 07:45:21 PM	Michael Rubinsky	Comment #9	Reply to this comment
that's the issue: as far as I understood the pear is moving from php4 to php5 (pear/Log i.e.: There is unfortunately no way to support both PHP4 and PHP5 in the same code base when running under E_ALL. Well, that's not technically true, but that's another story. Because it appears that the majority of Log package users have moved to PHP5, the Log package now targets that audience." so the horde way to not support newer php5 but sticking with php4 is bad. I didn't say we don't support php5. I said Horde 3 is compatible with PHP 4. All new development work is being done on Horde 4, which is PHP 5 native. So horde is one with not supporting the current php5 releases so I stay with it: it's a bug. I fail to see how a version of Horde that is designed to work with PHP 4 spitting out warning messages when used with PHP 5 is a bug. Not to mention that these error messages shouldn't be making it to the browser window on a production system anyway... To summarize again: Horde 4 is PHP 5 native. Horde 3 works perfectly fine with PHP 5 as long as the deprecated warnings don't make it to the browser. (Again, see jan's previous comments).

07/28/2010 07:37:28 PM	tim (at) spen (dot) de	Comment #8	Reply to this comment
Hi I think it is a bug - horde ist not well working with the latest php version 5.3 which is shipped with Ubuntu 10.04 (and other distros as well). 1) Horde 3 must maintain backwards compatibility with PHP 4. Horde 4 will require PHP 5.2 or later. that's the issue: as far as I understood the pear is moving from php4 to php5 (pear/Log i.e.: There is unfortunately no way to support both PHP4 and PHP5 in the same code base when running under E_ALL. Because it appears that the majority of Log package users have moved to PHP5, the Log package now targets that audience." so the horde way to not support newer php5 but sticking with php4 is bad. So horde is one with not supporting the current php5 releases so I stay with it: it's a bug.

07/28/2010 07:17:21 PM	Michael Rubinsky	Comment #7	Reply to this comment
3) The lines actually causing the problem are not even Horde code, they are in PEAR libraries. This, of course, should read "Some of the lines".

07/28/2010 07:15:58 PM	Michael Rubinsky	Comment #6	Reply to this comment
I think it is a bug - horde ist not well working with the latest php version 5.3 which is shipped with Ubuntu 10.04 (and other distros as well). 1) Horde 3 must maintain backwards compatibility with PHP 4. Horde 4 will require PHP 5.2 or later. 2) The "warning" line you refer to is NOT a horde issue. It is a side effect of the deprecated error lines being output to the browser. See Jan's earlier response. 3) The lines actually causing the problem are not even Horde code, they are in PEAR libraries. Please use the mailing list for further questions or support.

07/28/2010 07:04:29 PM	tim (at) spen (dot) de	Comment #5	Reply to this comment
Configure PHP or Horde to not include E_DEPRECATED in the error level. Please use the mailing list to ask for support. http://www.horde.org/mail/ contains a list of all available mailing lists. I think it is a bug - horde ist not well working with the latest php version 5.3 which is shipped with Ubuntu 10.04 (and other distros as well). Any clue when the issue (I' refering to the "warning" line, not the "deprecated" lines) "Warning: Cannot modify header information - headers already sent by " is fixed with horde?

05/03/2010 03:52:09 PM	Jan Schneider	Comment #4 State ⇒ Not A Bug	Reply to this comment
Configure PHP or Horde to not include E_DEPRECATED in the error level. Please use the mailing list to ask for support. http://www.horde.org/mail/ contains a list of all available mailing lists.

05/03/2010 03:40:19 PM	chris (at) vandenberghe (dot) org	Comment #3	Reply to this comment
Hi Jan, How can I find this out? The complete output of the page is: Deprecated: Assigning the return value of new by reference is deprecated in /path/horde-webmail-1.2.6/pear/php/Log.php on line 169 Deprecated: Assigning the return value of new by reference is deprecated in /path/horde-webmail-1.2.6/lib/Horde/Notification.php on line 64 Deprecated: Assigning the return value of new by reference is deprecated in /path/horde-webmail-1.2.6/lib/Horde/Perms.php on line 455 Deprecated: Assigning the return value of new by reference is deprecated in /path/horde-webmail-1.2.6/lib/Horde/Perms.php on line 462 Deprecated: Assigning the return value of new by reference is deprecated in /path/horde-webmail-1.2.6/lib/Horde/Perms/sql.php on line 83 Deprecated: Assigning the return value of new by reference is deprecated in /path/horde-webmail-1.2.6/lib/Horde/Perms/sql.php on line 116 Deprecated: Assigning the return value of new by reference is deprecated in /path/horde-webmail-1.2.6/lib/Horde/Perms/sql.php on line 153 Deprecated: Assigning the return value of new by reference is deprecated in /path/horde-webmail-1.2.6/lib/Horde/Prefs.php on line 847 Warning: Cannot modify header information - headers already sent by (output started at /path/horde-webmail-1.2.6/pear/php/Log.php:169) in /path/horde-webmail-1.2.6/index.php on line 97 There are no error messages in the apache logs. Please let me know how I can help debug. Regards, Chris.

05/03/2010 03:24:03 PM	Jan Schneider	Comment #2 Version ⇒ 1.2.6 State ⇒ Feedback	Reply to this comment
There is no code in this line that would produce any output. Are you that this is not a follow-up error of some other, earlier error message?

05/03/2010 03:00:50 PM	chris (at) vandenberghe (dot) org	Comment #1 Priority ⇒ 2. Medium Type ⇒ Bug Summary ⇒ Cannot modify header information - headers already sent Queue ⇒ Horde Groupware Webmail Edition Milestone ⇒ Patch ⇒ No State ⇒ Unconfirmed	Reply to this comment
Hi, I chose "Horde Groupware Webmail Edtion 1.2.5 Final" as "Horde Groupware Webmail Edtion 1.2.6 Final" is not yet in the list. The issue is however in 1.2.6. After installing Horde I get the following message when accessing index.php: Warning: Cannot modify header information - headers already sent by (output started at /path/horde-webmail-1.2.6/pear/php/Log.php:169) in /path/horde-webmail-1.2.6/index.php on line 97 Apache 2.2.14 Ubuntu server 10.04 PHP 5.3.2 Any idea what this could be? Thanks, Chris.