Index: branches/5.0.x/in-link/units/helpers/link_helper.php
===================================================================
diff -u -N
--- branches/5.0.x/in-link/units/helpers/link_helper.php	(revision 12746)
+++ branches/5.0.x/in-link/units/helpers/link_helper.php	(revision 0)
@@ -1,77 +0,0 @@
-<?php
-/**
-* @version	$Id: link_helper.php 12738 2009-10-20 19:36:22Z alex $
-* @package	In-Link
-* @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
-* @license      GNU/GPL
-* In-Portal is Open Source software.
-* This means that this software may have been modified pursuant
-* the GNU General Public License, and as distributed it includes
-* or is derivative of works licensed under the GNU General Public License
-* or other free or open source software licenses.
-* See http://www.in-portal.org/license for copyright notices and details.
-*/
-
-	defined('FULL_PATH') or die('restricted access!');
-
-	class LinkHelper extends kHelper {
-
-		/**
-		 * Checks, that we have link to our website on given site url
-		 *
-		 * @param string $url
-		 * @return bool
-		 */
-		function CheckReciprocalURL($url)
-		{
-			$ch = curl_init();
-			curl_setopt($ch, CURLOPT_URL, $url);
-			curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
-			curl_setopt($ch, CURLOPT_HEADER, 0);
-			curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
-			curl_setopt($ch, CURLOPT_TIMEOUT, 10);
-			$html = curl_exec($ch);
-
-			if (curl_errno($ch) != 0) {
-				// connection error
-				return false;
-			}
-
-			$info = curl_getinfo($ch);
-			if ($info['http_code'] != 200) {
-				// http error
-				return false;
-			}
-			curl_close($ch);
-
-			$reciprocal_url = rtrim($this->Application->BaseURL());
-
-			if (preg_match('/<a[^<]*href=(["\']?)' . preg_quote($reciprocal_url, '/') . '[\\/]?.*(\\1).*>(.*)<\\/a.*>/sUi', $html, $ret)) {
-				return true;
-			}
-
-			return false;
-		}
-
-
-		/**
-		 * Returns grouping fields for "Duplicate Checker" section
-		 *
-		 * @param string $prefix_special
-		 * @return Array
-		 */
-		function getGrouping($prefix_special)
-		{
-			// cut "sub" postfix from special
-			$prefix_special = preg_replace('/(.*)-sub$/', '\\1', $prefix_special);
-			$grouping = $this->Application->RecallVar($prefix_special . '_dupe_fields');
-
-			if (!$grouping) {
-				$grouping = '|Url|';
-				$this->Application->StoreVar($prefix_special . '_dupe_fields', $grouping);
-			}
-
-			return explode('|', substr($grouping, 1, -1));
-		}
-
-	}
\ No newline at end of file