#35096 [Fbk->Opn]: still trouble with mod_rewrite/apache2

ID: 35096 User updated by: rob at burningsoda dot com Reported By: rob at burningsoda dot com -Status: Feedback +Status: Open Bug Type: Apache2 related Operating System: * PHP Version: 5CVS, 4CVS (2005-11-04) (snap) New Comment: After rebuilding Apache2 and PHP5-dev on different machines the whole weekend about 2 million times and wondering why some showed the bug, some not, I eventually tracked it down to the following simple configuration setting (*drum roll*): *** output_buffering *** To trigger the bug, set "output_buffering = On" or (e.g.) "output_buffering = 4096", TO BYPASS THE BUG (listen up, bug plagued Joomla!/Wordpress/etc. users) SET "output_buffering = Off" in your php.ini. This bypass works for PHP 4 & 5. Cheers, rob. PS: If I extend my testcase to <?php ob_start(); echo($_GET['myarg']); ob_end_flush(); ?> with "output_buffering = Off" that still does _not_ trigger the bug. Maybe that helps. Previous Comments: ------------------------------------------------------------------------ [2005-11-07 08:11:59] scott at whitetigerphotography dot com Having an identical problem on FreeBSD 4.11-release-p13 with the latest version from ports (PHP 4.4.1 (cli) (built: Nov 6 2005 23:03:29)) (patched with the original CVS fix for this bug but that doesn't fix it) This too happens for any rewrite rule used for PHP. I use rewrite rules for almost all of my production sites and they have all stopped working, except for one which uses a CGI script instead. Affects software like Mambo (Joomla) with SEF enabled and Gallery Examples for rewrite reproduce code (from gallery): RewriteEngine On RewriteBase / RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^([^\.\?/]+)/([0-9]+)$ /view_photo.php?set_albumName=$1&index=$2 [QSA] RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^([^\.\?/]+)/([A-Za-z_0-9\-]+)$ /view_photo.php?set_albumName=$1&id=$2 [QSA] Result: Blank pages most of the time but in the case of gallery... occasional parts of pages for some reason. No errors found in PHP or Apache logs ------------------------------------------------------------------------ [2005-11-07 07:30:34] tmelzer at tomesoft dot de On SuSE 9.1 with apache 2.0.55 and php-4.4.x-dev with shared modules in this order - cryptopp - bz2 - imap - exif - mime_magic - dba - zlib - gd - sockets - curl - iconv - xslt - mysql - interbase - session .htaccess RewriteEngine On RewriteBase /shop/ RewriteRule ^irw_(.*)\.html index.php?param=$1 ------------------------------------------------------------------------ [2005-11-06 22:41:36] free4cd at yahoo dot de Same Problem with PHP 4.4.1 and 5.1 snapshots. If rewrite is enabled you get a blank page. No error in log file or else. Problem with Joomla and vBulletin/vBSEO if rewrite engine is turned on. If rewrite is disabled all works fine. My .htaccess for Joomla: RewriteEngine On RewriteBase / RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^(.*) index.php ------------------------------------------------------------------------ [2005-11-06 19:47:49] remko at elvandar dot org I had similiar problems with apache2+mod_rewrite and php 4.4.1. All sites that made use of mod_rewrite broke and gave a white page (nothing in the error log though), all other sites that use php but not mod_rewrite were working perfectly. my .htaccess: RewriteEngine On RewriteBase / RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^(.*) index.php ------------------------------------------------------------------------ [2005-11-06 16:29:08] brian dot white at foxfire74 dot com I have a WordPress powerered blog and get it for ANY rewrite rule. Here is a stripped down version of my .htaccess: ----------------------------------------------- # BEGIN WordPress <IfModule mod_rewrite.c> RewriteEngine On RewriteBase /blog/ RewriteCond %{REQUEST_FILENAME} -f [OR] RewriteCond %{REQUEST_FILENAME} -d RewriteRule ^.*$ - [S=75] RewriteRule ^search/(.+)/?$ /blog/index.php?s=$1 [QSA,L] RewriteRule ^category/(.+)/?$ /blog/index.php?category_name=$1 [QSA,L] RewriteRule ^author/([^/]+)/?$ /blog/index.php?author_name=$1 [QSA,L] RewriteRule ^([0-9]{4})/([0-9]{1,2})/([0-9]{1,2})/?$ /blog/index.php?year=$1&monthnum=$2&day=$3 [QSA,L] RewriteRule ^([0-9]{4})/([0-9]{1,2})/?$ /blog/index.php?year=$1&monthnum=$2 [QSA,L] RewriteRule ^([0-9]{4})/?$ /blog/index.php?year=$1 [QSA,L] RewriteRule ^([0-9]{4})/([0-9]{1,2})/([0-9]{1,2})/([^/]+)(/[0-9]+)?/?$ /blog/index.php?year=$1&monthnum=$2&day=$3&name=$4&page=$5 [QSA,L] </IfModule> # END WordPress Here what was requested in the browser: -------------------------------------- http://.../blog/2005/10/31/happy-halloween/ Here is what shows up in the logs: --------------------------------- [Mon Oct 31 23:25:42 2005] [error] PHP Warning: main(./wp-blog-header.php): failed to open stream: No such file or directory in C:\\...\\wordpress\\index.php on line 4 [Mon Oct 31 23:25:42 2005] [error] PHP Fatal error: main(): Failed opening required './wp-blog-header.php' (include_path='.;c:\\php4\\pear') in C:\\...\\wordpress\\index.php on line 4 Result: ------ The browser displays a blank page since PHP blows up. Using: ----- PHP 4.4.1 Windows XP SP2 Apache/2.0.55 (Win32) PHP/4.4.1 php4apache2.dll ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/35096 -- Edit this bug report at http://bugs.php.net/?id=35096&edit=1