ID: 45996 Comment by: mike at kogan dot org Reported By: phpbugs at colin dot guthr dot ie Status: Assigned Bug Type: XML related Operating System: Mandriva Linux PHP Version: 5.2.6 Assigned To: rrichards New Comment:
Nevermind we got it - libexpat is in and workaround is fine. Thanks again and happy coding! Previous Comments: ------------------------------------------------------------------------ [2008-10-16 02:01:00] mike at Kogan dot org Thanks Col - unfortunately after thrashing on this for a day I either have gotten libexpat built in and it hasn't worked, or my efforts to build it into Apache2 have not worked. How can I tell once I've rebuilt apache whether it's in or not? Will it show up on phpinfo? I see libexpat.so on the system and configured apache --with-expat=builtin and tried using the expat on the system but I'm not sure if it's actually getting there. Sorry in advance if this is not the place to ask such a question but googling libexpat has not been fruitful. ------------------------------------------------------------------------ [2008-10-15 09:02:54] phpbugs at colin dot guthr dot ie Mike, it's fairly easy to recompile PHP with the libexpat library for the legacy XML parsing functions while keeping libxml2 for the more modern ones. We did that in the Mandriva package for our 2009.0 release after I reported the bug. See the SPEC file here: http://svn.mandriva.com/cgi-bin/viewvc.cgi/packages/updates/2009.0/php/current/SPECS/php.spec?revision=291141&view=markup The particular change that worked around it is here: http://svn.mandriva.com/cgi-bin/viewvc.cgi/packages/updates/2009.0/php/current/SPECS/php.spec?r1=278891&r2=281822 I'm sure you can work out how to get the needed patch that is mentioned by navigating the webcvs :) You should be able to use this to recompile the CentOS PHP package accordingly. Hope this helps. Col ------------------------------------------------------------------------ [2008-10-15 00:04:01] mike at kogan dot org I also have run into this - we had some legacy php code on the xml_parser that was fine on some centos 4 servers with php4 and 5 running apache 1.3. We've been debugging this failure for a day now on our new centos 5 server running php5 and libxml2 2.7.2, and we confirm the same problem. The characterHandler is not called for the known entities so scripts depending on this (rss feed converters etc) emit flawed html. I agree there's much better ways to parse XML but this is legacy stuff thats somewhat pervasive and we didn;t choose what these folks used for their apps. I'd love to rebuild their server with an older libxml2 but am not sure how to go backwards without causing some other problem. Customer has cpanel/whm and all that hooey and I'd rather not create a mess on their new server. Hope ya'll fix this soon as it is an issue on the cpanel folks that have 2.7.2 in their stable branch for centos 5 that is being spread by their updater. If someone can give me a pointer that a straightup build and install of the old release code wont make things worse I'll take a crack at moving their server back. ------------------------------------------------------------------------ [2008-10-08 09:50:16] phpbugs at colin dot guthr dot ie Yes, I suspect that the comments left by ptn at post dot cz are incorrect when they say it is fixed in libxml. rrichards has given a very complete explanation of the problem and it is more fundamental than a simple bug. Compiling PHP with libexpat is the correct workaround for now. ------------------------------------------------------------------------ [2008-10-08 09:18:54] uraes at hot dot ee just tried libxml2-2.7.2 and 5.2.6-pl7-gentoo and it is still broken: Example PHP code: <? $data="<?xml version = '1.0' encoding = 'UTF-8'?> <rss version=\"2.0\" > <channel> <item> <description><a href="http://www.google.com">Google</a></description> </item> </channel> </rss> "; $parser = xml_parser_create('UTF-8'); xml_parser_set_option($parser, XML_OPTION_SKIP_WHITE, 1); xml_parse_into_struct($parser, $data, $vals, $index); xml_parser_free($parser); echo "<pre>"; echo "<b>Original XML:</b><br>".htmlentities($data); echo "<br><br><b>Parsed struct:</b><br>"; print_r($vals); ?> .. parsed result is "a href=http://www.google.com>Google/a>" ------------------------------------------------------------------------ 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/45996 -- Edit this bug report at http://bugs.php.net/?id=45996&edit=1
