FeedsSyndicationParser parses some feeds correctly, but not others, but not due to timestamp problems

I've come across similar behavior (feed nodes created, no feeds_data_syndication items created, even on forced import) in trying to get the common_syndication_parser to work with custom XML. Pseudo-debugging (first code block) pointed to simplexml_load_string() failing and upon investigation (second code block) found that my XML was not coming in completely (died around 30KB) and SimpleXML was complaining that it was missing close tags. I've gotten it to work by reducing the size of my XML file, but it's certainly not a long-term solution. I also checked it with both cURL and drupal_http_request(), PHP mem limit 128MB, exec_limit 180.

I understand that the two feeds you mention are similar in size, but this might be an area to investigate as a possible cause.

// Got a malformed XML.
  if ($xml === FALSE || is_null($xml)) {
    trigger_error("c_s_p_parse received bad XML, beginning:" . substr($string, 0, 20));
    return FALSE;
  }

  libxml_use_internal_errors(true); //Have SimpleXML store errors for retrieval by libxml_get_errors() .
  if (!defined('LIBXML_VERSION') || (version_compare(phpversion(), '5.1.0', '<'))) {
    @ $xml = simplexml_load_string($string, NULL);
  }
  else {
    @ $xml = simplexml_load_string($string, NULL);// LIBXML_NOERROR | LIBXML_NOWARNING | LIBXML_NOCDATA); //Allow errors.
  }
  $errors = libxml_get_errors();
  foreach ($errors as $error) {
    $message = (string)$error->message;
    trigger_error("Error is: $message");
    }

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Cannot use object of type stdClass as array in feeds/libraries/common_syndication_parser.inc on line 276

I got tons of this error.

Any news on that issue?

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Some of the format errors occurring on mappings are being addressed by #624088-30: Mapper: ImageField/FileField (formalize feed elements)

The 'Cannot use object of type stdClass as array' seem to be occurring because you have functions such as _parser_common_syndication_RDF10_item returning an object, but these objects are being referred to as arrays in the calling functions. eg in common_syndication_parser.inc line 263 assigns $item to be the return from a call to _parser_common_syndication_RDF10_item(), which is an object.

On line 276 and continuing throughout the rest of the function $item is being treated as an array, eg
$item['title'] = _parser_common_syndication_title($item['title'], $item['description']);

This seems badly b0rked - however it's my first time with this module - anyone have any further comments as to whether this is by design and what the best fix would be? Should they be objects or arrays? Will any decision break anything else?

Just a quick note re: #7 - SimpleXML is convoluted in it's use of objects and arrays as shown below. WRT what you wrote, I wouldn't be surprised if that is (part of) the problem. In fixing it just be aware of the gotchas as below.

If you had a node like:

<parent attrib="someAttrib">
   <firstChild>Some value</firstChild>
   <secondChild attrib="best">Some other value</secondChild>
</parent>

$parent = simplexml_load_string($raw, NULL);
To access 'some value' you'd use $thisIsSomevalue = $parent->firstChild. To access 'best' you'd use

$thisIsSecondChild = $parent->secondChild;
$thisIsAttribBest = $thisIsSecondChild['attrib'];

For 'someAttrib' you'd use $thisIsSomeAttrib = $parent['attrib'];

HTH.

I'm also getting errors such as:

Fatal error: Cannot use object of type stdClass as array in /srv/www/drupal/modules/feeds/libraries/common_syndication_parser.inc on line 276

when parsing feeds such as:

http://rss.gmane.org/gmane.linux.distributions.equinux.general

I assume all Gmane RSS feeds will fail using Feeds. Other feeds such as:

http://wiki.debian.org/RecentChanges?action=rss_rc&unique=1&ddiffs=1

fail with the same message. I'm using latest Drupal and Feeds modules.

I've run into this bug myself and I have a little more information.

I run into it when running on ubuntu 9.10 i386, but not on amd64. Same version of php (5.2.10.dfsg.1-2ubuntu6.4).

It's literally the same error
An error occurred. /ncceh/batch?id=10&op=do <br /> <b>Fatal error</b>: Cannot use object of type stdClass as array in <b>/var/www/ncceh/sites/all/modules/feeds/libraries/common_syndication_parser.inc</b> on line <b>276</b><br />
(That's how it appears when I add a new feed)

Also occurs when I manually compile apache (v2.2.14) and php (v5.2.13) on i386.

Ok, a few code tweaks and it's working now:

--- common_syndication_parser.inc.orig	2010-01-28 11:57:54.000000000 -0800
+++ common_syndication_parser.inc	2010-03-01 17:09:55.423355608 -0800
@@ -272,6 +272,8 @@
       ),
     ));
 
+    $item = (array) $item;
+
     // Special handling for the title:
     $item['title'] = _parser_common_syndication_title($item['title'], $item['description']);
 
@@ -294,7 +296,9 @@
       // looks nicer in the mapper UI
       // @todo Revisit, not used with feedapi mapper anymore.
       $rdf_property = str_replace(':', '_', $rdf_property);
-      $item['rdf'][$rdf_property] = $rdf_value;
+      $item_rdf = (array) $item['rdf'];
+      $item_rdf[$rdf_property] = $rdf_value;
+      $item['rdf'] = (object) $item_rdf;
     }
 
     $parsed_source['items'][] = $item;

I have absolutely no idea why this runs on my amd64 box and not on i386...

Hey, would you look at that, a patch here! ;)

Please format the patch appropriately and change the issue status next time.

Not critical.

This is an incredibly old issue. I just tested the science feed in question and it worked fine.

If someone still has a problem, please create a new issue.