Description: ------------ Hi, First of all, thanks for your package, we are using it @ Jaws Project for supporting pingback. The reason of this 'bug report' is to let you know a little bug I found. Currently you validate an URI by calling fopen which is *OK*, however fopen has some limitations with some URLs (like those that use query strings or path info: index.php/foo/bar). And example of this happens when the discover/source/target URIs are very similar to http://www.example.com/index.php/foo/bar (using PATH_INFO). With the current release it will return false which is not correct cause maybe the sourceURI/targetURI uses PATH_INFO (like WP/Jaws/others). So, the most *reasonable* way to fix this is to do the same that RPC (and some parts of Pingback) does: use fsockopen/HTTP_Request which does: 1. Open a socket (fsockopen) 2. Get headers 3. If responseCode == 200 then the URI is valid. I'm sending a patch for this (already tested with some WP/Jaws posts). Thanks for the package! Test script: --------------- function isURIExist($uri) { $params = array( 'timeout' => 3, 'allowRedirects' => true, 'maxRedirects' => 2, ); $req = new HTTP_Request($uri, $params); $req->sendRequest(); if (PEAR::isError($req)) { return false; } if ($req->getResponseCode() == 200) { return true; } return false; }