PHP Error with WP_Error

[mattyrob]

I'm getting a white screen on my main WordPress site when I Publish a post since starting to use 2.7.

My server error logs contain the following that matches time wise for every white screen I've seen:

PHP Catchable fatal error: Object of class WP_Error could not be converted to string in /home/prescrib/public_html/wp-includes/comment.php on line 1264

I have disabled all plugins and still get this error. (Strangely, this is not reproducible on my localhost dev WordPress so there may be some server settings involved too.

[mattyrob]

And stranger still, if I amend the function that appear to be generating this error by adding a:

return false;

immediately the function is called I don't get the error in the logs but I still get a white screen!?!

[vladimir_kolesnikov]

This might happen when WP_Http_Fsockopen::chunkTransferDecode() fails to decode the response. In this case, $responsebody becomes WP_Error, not a string:

$process['body'] = WP_Http::chunkTransferDecode($process['body']);

Need to add one extra check to discover_pingback_server_uri().

[vladimir_kolesnikov]

Attached a better patch that takes care of other places from which wp_remote_get()/wp_remote_post() are called.

[MattyRob]

I went back to basic and wiped my WordPress install and re-uploaded the core files fresh. This has resolved the white screen issue. Maybe the patch will fix the Error Log entry

[ryan]

Addressed by [10282]?

[ryan]

And [10281].

[vladimir_kolesnikov]

Replying to ryan:

And [10281].

Need to update PhpDoc for chunkTransferDecode(), say:

- * @return bool|string|WP_Error False if not chunked encoded. WP_Error on failure. Chunked decoded body on success.
+ * @return bool|string False if not chunked encoded. Chunked decoded body on success.

[vladimir_kolesnikov]

Yes, from what I can tell that seems to have fixed the problem.

[jacobsantos]

Addressed upstream in #8618. PHPdoc is also fixed in that ticket for both 2.7 and trunk.