diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 4f146016cd344c7df6fef80a402f50360590a0e6..d19f7b85205454c3caf6c111629e9de05a7fb6a4 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -11,6 +11,6 @@ jobs:
   when: manual
   stage: test
   script:
-    - phpmd include text utils/gitlab-ci/phpmd-ruleset.xml 
-    - phpmd classes text utils/gitlab-ci/phpmd-ruleset.xml 
-
+    - phpmd include text utils/gitlab-ci/phpmd-ruleset.xml
+    - phpmd classes text utils/gitlab-ci/phpmd-ruleset.xml
+    - FILES=$(ls -dm *.php | sed "s/ //g") && phpmd $FILES text utils/gitlab-ci/phpmd-ruleset.xml
diff --git a/classes/api.php b/classes/api.php
index c43a78ebee686b81939ab95b3ea828b5a734a969..895ea52615a9e84bac0751a6467a16b812194d69 100644
--- a/classes/api.php
+++ b/classes/api.php
@@ -1,5 +1,4 @@
 <?php
-
 class API extends Handler {
 
 	const API_LEVEL  = 14;
@@ -309,7 +308,7 @@ class API extends Handler {
 						get_feed_access_key(-2, false);
 
 					$p = new pubsubhubbub\publisher\Publisher(PUBSUBHUBBUB_HUB);
-					$pubsub_result = $p->publish_update($rss_link);
+					$p->publish_update($rss_link);
 				}
 			}
 
@@ -418,7 +417,7 @@ class API extends Handler {
 		$feed_id = (int) $this->dbh->escape_string($_REQUEST["feed_id"]);
 
 		if (!ini_get("open_basedir")) {
-			update_rss_feed($feed_id, true);
+			update_rss_feed($feed_id);
 		}
 
 		$this->wrap(self::STATUS_OK, array("status" => "OK"));
@@ -658,6 +657,9 @@ class API extends Handler {
 		return $feeds;
 	}
 
+	/**
+	 * @SuppressWarnings(PHPMD.UnusedFormalParameter)
+	 */
 	static function api_get_headlines($feed_id, $limit, $offset,
 				$filter, $is_cat, $show_excerpt, $show_content, $view_mode, $order,
 				$include_attachments, $since_id,
@@ -677,7 +679,7 @@ class API extends Handler {
 
 					if (!$cache_images && time() - $last_updated > 120) {
 						include "rssfuncs.php";
-						update_rss_feed($feed_id, true, true);
+						update_rss_feed($feed_id, true);
 					} else {
 						db_query("UPDATE ttrss_feeds SET last_updated = '1970-01-01', last_update_started = '1970-01-01'
 							WHERE id = '$feed_id'");
diff --git a/classes/article.php b/classes/article.php
index 4126843af6d36b5d8e1c32b2038da09312c7f0a1..2e7a05e0bb1db7e125242adcef0b9182e5895d52 100644
--- a/classes/article.php
+++ b/classes/article.php
@@ -361,7 +361,7 @@ class Article extends Handler_Protected {
 				$labels = get_article_labels($id, $_SESSION["uid"]);
 
 				array_push($reply["info-for-headlines"],
-				array("id" => $id, "labels" => format_article_labels($labels, $id)));
+				array("id" => $id, "labels" => format_article_labels($labels)));
 
 			}
 		}
diff --git a/classes/auth/base.php b/classes/auth/base.php
index 69acd0985c6ceb87a173eafa2983a411589a07ff..26b6e4ab7bd120f96c28fb04e87d987dc06bf45c 100644
--- a/classes/auth/base.php
+++ b/classes/auth/base.php
@@ -6,10 +6,16 @@ class Auth_Base {
 		$this->dbh = Db::get();
 	}
 
+	/**
+	 * @SuppressWarnings(unused)
+	 */
 	function check_password($owner_uid, $password) {
 		return false;
 	}
 
+	/**
+	 * @SuppressWarnings(unused)
+	 */
 	function authenticate($login, $password) {
 		return false;
 	}
diff --git a/classes/db/prefs.php b/classes/db/prefs.php
index 3e92bb89b59073766e61eadf28dac6af0d3826e8..0d4ebc2d2506aa3fdeca93263f71be69fdf93259 100644
--- a/classes/db/prefs.php
+++ b/classes/db/prefs.php
@@ -23,8 +23,6 @@ class Db_Prefs {
 	}
 
 	function cache() {
-		$profile = false;
-
 		$user_id = $_SESSION["uid"];
 		@$profile = $_SESSION["profile"];
 
@@ -129,7 +127,6 @@ class Db_Prefs {
 			@$profile = $_SESSION["profile"];
 		} else {
 			$user_id = sprintf("%d", $user_id);
-			$prefs_cache = false;
 		}
 
 		if ($profile) {
diff --git a/classes/feeds.php b/classes/feeds.php
index 48c4ad1992c3e0de606569bdd9224e2b741fb957..4c4972d76d3d17ca4f74fa924f1d31bdb69a5551 100755
--- a/classes/feeds.php
+++ b/classes/feeds.php
@@ -13,7 +13,7 @@ class Feeds extends Handler_Protected {
 
 	private function format_headline_subtoolbar($feed_site_url, $feed_title,
 			$feed_id, $is_cat, $search,
-			$view_mode, $error, $feed_last_updated) {
+			$error, $feed_last_updated) {
 
 		$catchup_sel_link = "catchupSelection()";
 
@@ -153,7 +153,7 @@ class Feeds extends Handler_Protected {
 	}
 
 	private function format_headlines_list($feed, $method, $view_mode, $limit, $cat_view,
-					$next_unread_feed, $offset, $vgr_last_feed = false,
+					$offset, $vgr_last_feed = false,
 					$override_order = false, $include_children = false, $check_first_id = false,
 					$skip_first_id_check = false) {
 
@@ -203,7 +203,7 @@ class Feeds extends Handler_Protected {
 
 					if (!$cache_images && time() - $last_updated > 120) {
 						include "rssfuncs.php";
-						update_rss_feed($feed, true, true);
+						update_rss_feed($feed, true);
 					} else {
 						$this->dbh->query("UPDATE ttrss_feeds SET last_updated = '1970-01-01', last_update_started = '1970-01-01'
 								WHERE id = '$feed'");
@@ -306,7 +306,7 @@ class Feeds extends Handler_Protected {
 
 		$reply['toolbar'] = $this->format_headline_subtoolbar($feed_site_url,
 			$feed_title,
-			$feed, $cat_view, $search, $view_mode,
+			$feed, $cat_view, $search,
 			$last_error, $last_updated);
 
 		$headlines_count = is_numeric($result) ? 0 : $this->dbh->num_rows($result);
@@ -361,7 +361,7 @@ class Feeds extends Handler_Protected {
 				if (!is_array($labels)) $labels = get_article_labels($id);
 
 				$labels_str = "<span class=\"HLLCTR-$id\">";
-				$labels_str .= format_article_labels($labels, $id);
+				$labels_str .= format_article_labels($labels);
 				$labels_str .= "</span>";
 
 				if (count($topmost_article_ids) < 3) {
@@ -937,7 +937,7 @@ class Feeds extends Handler_Protected {
 		if ($_REQUEST["debug"]) $timing_info = print_checkpoint("04", $timing_info);
 
 		$ret = $this->format_headlines_list($feed, $method,
-			$view_mode, $limit, $cat_view, $next_unread_feed, $offset,
+			$view_mode, $limit, $cat_view, $offset,
 			$vgroup_last_feed, $override_order, true, $check_first_id, $skip_first_id_check);
 
 		//$topmost_article_ids = $ret[0];
@@ -1231,7 +1231,7 @@ class Feeds extends Handler_Protected {
 
 		if ($do_update) {
 			include "rssfuncs.php";
-			update_rss_feed($feed_id, true, true);
+			update_rss_feed($feed_id, true);
 		}
 
 		?></pre>
diff --git a/classes/logger/syslog.php b/classes/logger/syslog.php
index b8b5260a04c68f63ebfa6949794139d1a2e97464..04416060134575c136c69553cdcf6d7fda6ea08e 100644
--- a/classes/logger/syslog.php
+++ b/classes/logger/syslog.php
@@ -1,6 +1,9 @@
 <?php
 class Logger_Syslog {
 
+	/**
+	 * @SuppressWarnings(PHPMD.UnusedFormalParameter)
+	 */
 	function log_error($errno, $errstr, $file, $line, $context) {
 
 		switch ($errno) {
diff --git a/classes/opml.php b/classes/opml.php
index 04516dde42339bb4a15d57150930de38158d317d..0ad5ddf3c1dcc2787357742ada305ca4a77ab207 100644
--- a/classes/opml.php
+++ b/classes/opml.php
@@ -251,7 +251,7 @@ class Opml extends Handler_Protected {
 
 	// Import
 
-	private function opml_import_feed($doc, $node, $cat_id, $owner_uid) {
+	private function opml_import_feed($node, $cat_id, $owner_uid) {
 		$attrs = $node->attributes;
 
 		$feed_title = $this->dbh->escape_string(mb_substr($attrs->getNamedItem('text')->nodeValue, 0, 250));
@@ -284,7 +284,7 @@ class Opml extends Handler_Protected {
 		}
 	}
 
-	private function opml_import_label($doc, $node, $owner_uid) {
+	private function opml_import_label($node, $owner_uid) {
 		$attrs = $node->attributes;
 		$label_name = $this->dbh->escape_string($attrs->getNamedItem('label-name')->nodeValue);
 
@@ -301,7 +301,7 @@ class Opml extends Handler_Protected {
 		}
 	}
 
-	private function opml_import_preference($doc, $node, $owner_uid) {
+	private function opml_import_preference($node) {
 		$attrs = $node->attributes;
 		$pref_name = $this->dbh->escape_string($attrs->getNamedItem('pref-name')->nodeValue);
 
@@ -315,7 +315,7 @@ class Opml extends Handler_Protected {
 		}
 	}
 
-	private function opml_import_filter($doc, $node, $owner_uid) {
+	private function opml_import_filter($node) {
 		$attrs = $node->attributes;
 
 		$filter_type = $this->dbh->escape_string($attrs->getNamedItem('filter-type')->nodeValue);
@@ -386,8 +386,6 @@ class Opml extends Handler_Protected {
 	}
 
 	private function opml_import_category($doc, $root_node, $owner_uid, $parent_id) {
-		$body = $doc->getElementsByTagName('body');
-
 		$default_cat_id = (int) get_feed_category('Imported feeds', false);
 
 		if ($root_node) {
@@ -442,16 +440,16 @@ class Opml extends Handler_Protected {
 
 					switch ($cat_title) {
 					case "tt-rss-prefs":
-						$this->opml_import_preference($doc, $node, $owner_uid);
+						$this->opml_import_preference($node);
 						break;
 					case "tt-rss-labels":
-						$this->opml_import_label($doc, $node, $owner_uid);
+						$this->opml_import_label($node, $owner_uid);
 						break;
 					case "tt-rss-filters":
-						$this->opml_import_filter($doc, $node, $owner_uid);
+						$this->opml_import_filter($node);
 						break;
 					default:
-						$this->opml_import_feed($doc, $node, $dst_cat_id, $owner_uid);
+						$this->opml_import_feed($node, $dst_cat_id, $owner_uid);
 					}
 				}
 			}
@@ -461,19 +459,14 @@ class Opml extends Handler_Protected {
 	function opml_import($owner_uid) {
 		if (!$owner_uid) return;
 
-		$debug = isset($_REQUEST["debug"]);
 		$doc = false;
 
-#		if ($debug) $doc = DOMDocument::load("/tmp/test.opml");
-
 		if ($_FILES['opml_file']['error'] != 0) {
 			print_error(T_sprintf("Upload failed with error code %d",
 				$_FILES['opml_file']['error']));
 			return;
 		}
 
-		$tmp_file = false;
-
 		if (is_uploaded_file($_FILES['opml_file']['tmp_name'])) {
 			$tmp_file = tempnam(CACHE_DIR . '/upload', 'opml');
 
diff --git a/classes/plugin.php b/classes/plugin.php
index 09204098bb411314157dd71c7b38bb9f80e1a979..5041de0c42878119960fce5200f53e842360f906 100644
--- a/classes/plugin.php
+++ b/classes/plugin.php
@@ -22,6 +22,9 @@ class Plugin {
 		return array();
 	}
 
+	/**
+	 * @SuppressWarnings(PHPMD.UnusedFormalParameter)
+	 */
 	function is_public_method($method) {
 		return false;
 	}
diff --git a/classes/pluginhost.php b/classes/pluginhost.php
index 3c2d7931e3e1044a59e08b05f96b1f96f67515db..48ef43e0a0036ca8d1026aee5d44a9b8bab38d4e 100644
--- a/classes/pluginhost.php
+++ b/classes/pluginhost.php
@@ -288,7 +288,7 @@ class PluginHost {
 		}
 	}
 
-	function load_data($force = false) {
+	function load_data() {
 		if ($this->owner_uid)  {
 			$result = $this->dbh->query("SELECT name, content FROM ttrss_plugin_storage
 				WHERE owner_uid = '".$this->owner_uid."'");
diff --git a/classes/pref/filters.php b/classes/pref/filters.php
index 5629f530cb44422088951be1029e834c28e2a602..f3836d8e1f6d42ed42a4492662673c55b1be3356 100755
--- a/classes/pref/filters.php
+++ b/classes/pref/filters.php
@@ -130,7 +130,7 @@ class Pref_Filters extends Handler_Protected {
 			while ($line = db_fetch_assoc($result)) {
 
 				$rc = get_article_filters(array($filter), $line['title'], $line['content'], $line['link'],
-					false, $line['author'], explode(",", $line['tag_cache']));
+					$line['author'], explode(",", $line['tag_cache']));
 
 				if (count($rc) > 0) {
 
diff --git a/classes/pref/users.php b/classes/pref/users.php
index f211a8f2fd34bb7d55c1ddf874df3cf8db3b2287..215f05646c9ad2522e2d8ae57ff71e3dc9065aed 100644
--- a/classes/pref/users.php
+++ b/classes/pref/users.php
@@ -251,7 +251,6 @@ class Pref_Users extends Handler_Protected {
 
 			$login = db_fetch_result($result, 0, "login");
 			$email = db_fetch_result($result, 0, "email");
-			$salt = db_fetch_result($result, 0, "salt");
 
 			$new_salt = substr(bin2hex(get_random_bytes(125)), 0, 250);
 			$tmp_user_pwd = make_password(8);
diff --git a/classes/rpc.php b/classes/rpc.php
index ca8ce39adb876fac9b3e454ae65c07a50d04cd43..008ed876ab7e14948ccffba2079ba63eeab6b594 100755
--- a/classes/rpc.php
+++ b/classes/rpc.php
@@ -453,7 +453,7 @@ class RPC extends Handler_Protected {
 		$search_query = $this->dbh->escape_string($_REQUEST['search_query']);
 		$search_lang = $this->dbh->escape_string($_REQUEST['search_lang']);
 
-		catchup_feed($feed_id, $is_cat, false, false, $mode, [$search_query, $search_lang]);
+		catchup_feed($feed_id, $is_cat, false, $mode, [$search_query, $search_lang]);
 
 		print json_encode(array("message" => "UPDATE_COUNTERS"));
 	}
diff --git a/include/errorhandler.php b/include/errorhandler.php
index f757b68d1cbbb3ae2a0111c9daa29ff101940239..bb2fbaee37dacd7f485167cf6aaae6a9a267e592 100644
--- a/include/errorhandler.php
+++ b/include/errorhandler.php
@@ -32,8 +32,6 @@ function format_backtrace($trace) {
 }
 
 function ttrss_error_handler($errno, $errstr, $file, $line, $context) {
-	global $logger;
-
 	if (error_reporting() == 0 || !$errno) return false;
 
 	$file = substr(str_replace(dirname(dirname(__FILE__)), "", $file), 1);
@@ -46,7 +44,6 @@ function ttrss_error_handler($errno, $errstr, $file, $line, $context) {
 }
 
 function ttrss_fatal_handler() {
-	global $logger;
 	global $last_query;
 
 	$error = error_get_last();
diff --git a/include/functions.php b/include/functions.php
index 526750574446b646fba26f72fa12357b8486573f..baeaa03abee1e30a9779deb5b67db76331d9c2c5 100644
--- a/include/functions.php
+++ b/include/functions.php
@@ -1163,7 +1163,7 @@
 		}
 	}
 
-	function catchup_feed($feed, $cat_view, $owner_uid = false, $max_id = false, $mode = 'all', $search = false) {
+	function catchup_feed($feed, $cat_view, $owner_uid = false, $mode = 'all', $search = false) {
 
 		if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 
@@ -1746,7 +1746,6 @@
 
 		global $fetch_last_error;
 		global $fetch_last_error_content;
-		global $fetch_last_error_code;
 
 		require_once "include/rssfuncs.php";
 
@@ -2066,5 +2065,3 @@
 
 	// TODO: less dumb splitting
 	require_once "functions2.php";
-
-?>
diff --git a/include/functions2.php b/include/functions2.php
index 844693654801a59fa0261ebba433830590d58c21..f9ee8245f2bfd4df85eae76532420ea5836bfc82 100644
--- a/include/functions2.php
+++ b/include/functions2.php
@@ -1557,7 +1557,7 @@
 		}
 	} // function encrypt_password
 
-	function load_filters($feed_id, $owner_uid, $action_id = false) {
+	function load_filters($feed_id, $owner_uid) {
 		$filters = array();
 
 		$cat_id = (int)getFeedCategory($feed_id);
@@ -1655,7 +1655,7 @@
 		return true;
 	}
 
-	function format_tags_string($tags, $id) {
+	function format_tags_string($tags) {
 		if (!is_array($tags) || count($tags) == 0) {
 			return __("no tags");
 		} else {
@@ -1675,7 +1675,7 @@
 		}
 	}
 
-	function format_article_labels($labels, $id) {
+	function format_article_labels($labels) {
 
 		if (!is_array($labels)) return '';
 
@@ -2484,6 +2484,9 @@
 		return false;
 	}
 
+	/**
+	 * @SuppressWarnings(unused)
+	 */
 	function error_json($code) {
 		require_once "errors.php";
 
diff --git a/include/rssfuncs.php b/include/rssfuncs.php
index 1eea3df3a5626c9a316b6077f1d52d098e9a7f25..645d06f895470fc0ec534d3f71b505b98cf85184 100644
--- a/include/rssfuncs.php
+++ b/include/rssfuncs.php
@@ -60,20 +60,7 @@
 
 	}
 
-
-	/**
-	 * Update a feed batch.
-	 * Used by daemons to update n feeds by run.
-	 * Only update feed needing a update, and not being processed
-	 * by another process.
-	 *
-	 * @param mixed $link Database link
-	 * @param integer $limit Maximum number of feeds in update batch. Default to DAEMON_FEED_LIMIT.
-	 * @param boolean $from_http Set to true if you call this function from http to disable cli specific code.
-	 * @param boolean $debug Set to false to disable debug output. Default to true.
-	 * @return void
-	 */
-	function update_daemon_common($limit = DAEMON_FEED_LIMIT, $from_http = false, $debug = true) {
+	function update_daemon_common($limit = DAEMON_FEED_LIMIT, $debug = true) {
 		// Process all other feeds using last_updated and interval parameters
 
 		$schema_version = get_schema_version();
@@ -200,8 +187,6 @@
 			ORDER BY ttrss_feeds.id $query_limit");
 
 			if (db_num_rows($tmp_result) > 0) {
-				$rss = false;
-
 				while ($tline = db_fetch_assoc($tmp_result)) {
 					if($debug) _debug(" => " . $tline["last_updated"] . ", " . $tline["id"] . " " . $tline["owner_uid"]);
 
@@ -209,7 +194,7 @@
 						array_push($batch_owners, $tline["owner_uid"]);
 
 					$fstarted = microtime(true);
-					$rss = update_rss_feed($tline["id"], true, false);
+					update_rss_feed($tline["id"], true, false);
 					_debug_suppress(false);
 
 					_debug(sprintf("    %.4f (sec)", microtime(true) - $fstarted));
@@ -237,7 +222,7 @@
 
 		return $nf;
 
-	} // function update_daemon_common
+	}
 
 	// this is used when subscribing
 	function set_basic_feed_info($feed) {
@@ -300,8 +285,10 @@
 		}
 	}
 
-	// ignore_daemon is not used
-	function update_rss_feed($feed, $ignore_daemon = false, $no_cache = false, $rss = false) {
+	/**
+	  * @SuppressWarnings(PHPMD.UnusedFormalParameter)
+	*/
+	function update_rss_feed($feed, $no_cache = false) {
 
 		$debug_enabled = defined('DAEMON_EXTENDED_DEBUG') || $_REQUEST['xdebug'];
 
@@ -370,94 +357,90 @@
 		$pluginhost->load($user_plugins, PluginHost::KIND_USER, $owner_uid);
 		$pluginhost->load_data();
 
-		if ($rss && is_object($rss) && get_class($rss) == "FeedParser") {
-			_debug("using previously initialized parser object");
-		} else {
-			$rss_hash = false;
+		$rss_hash = false;
 
-			$force_refetch = isset($_REQUEST["force_refetch"]);
-			$feed_data = "";
+		$force_refetch = isset($_REQUEST["force_refetch"]);
+		$feed_data = "";
 
-			foreach ($pluginhost->get_hooks(PluginHost::HOOK_FETCH_FEED) as $plugin) {
-				$feed_data = $plugin->hook_fetch_feed($feed_data, $fetch_url, $owner_uid, $feed, 0, $auth_login, $auth_pass);
-			}
-
-			// try cache
-			if (!$feed_data &&
-				file_exists($cache_filename) &&
-				is_readable($cache_filename) &&
-				!$auth_login && !$auth_pass &&
-				filemtime($cache_filename) > time() - 30) {
+		foreach ($pluginhost->get_hooks(PluginHost::HOOK_FETCH_FEED) as $plugin) {
+			$feed_data = $plugin->hook_fetch_feed($feed_data, $fetch_url, $owner_uid, $feed, 0, $auth_login, $auth_pass);
+		}
 
-				_debug("using local cache [$cache_filename].", $debug_enabled);
+		// try cache
+		if (!$feed_data &&
+			file_exists($cache_filename) &&
+			is_readable($cache_filename) &&
+			!$auth_login && !$auth_pass &&
+			filemtime($cache_filename) > time() - 30) {
 
-				@$feed_data = file_get_contents($cache_filename);
+			_debug("using local cache [$cache_filename].", $debug_enabled);
 
-				if ($feed_data) {
-					$rss_hash = sha1($feed_data);
-				}
+			@$feed_data = file_get_contents($cache_filename);
 
-			} else {
-				_debug("local cache will not be used for this feed", $debug_enabled);
+			if ($feed_data) {
+				$rss_hash = sha1($feed_data);
 			}
 
-			// fetch feed from source
-			if (!$feed_data) {
-				_debug("fetching [$fetch_url]...", $debug_enabled);
+		} else {
+			_debug("local cache will not be used for this feed", $debug_enabled);
+		}
 
-				if (ini_get("open_basedir") && function_exists("curl_init")) {
-					_debug("not using CURL due to open_basedir restrictions");
-				}
+		// fetch feed from source
+		if (!$feed_data) {
+			_debug("fetching [$fetch_url]...", $debug_enabled);
 
-				$feed_data = fetch_file_contents($fetch_url, false,
-					$auth_login, $auth_pass, false,
-					$no_cache ? FEED_FETCH_NO_CACHE_TIMEOUT : FEED_FETCH_TIMEOUT,
-					0);
+			if (ini_get("open_basedir") && function_exists("curl_init")) {
+				_debug("not using CURL due to open_basedir restrictions");
+			}
 
-				global $fetch_curl_used;
+			$feed_data = fetch_file_contents($fetch_url, false,
+				$auth_login, $auth_pass, false,
+				$no_cache ? FEED_FETCH_NO_CACHE_TIMEOUT : FEED_FETCH_TIMEOUT,
+				0);
 
-				if (!$fetch_curl_used) {
-					$tmp = @gzdecode($feed_data);
+			global $fetch_curl_used;
 
-					if ($tmp) $feed_data = $tmp;
-				}
+			if (!$fetch_curl_used) {
+				$tmp = @gzdecode($feed_data);
 
-				$feed_data = trim($feed_data);
+				if ($tmp) $feed_data = $tmp;
+			}
 
-				_debug("fetch done.", $debug_enabled);
+			$feed_data = trim($feed_data);
 
-				// cache vanilla feed data for re-use
-				if ($feed_data && !$auth_pass && !$auth_login && is_writable(CACHE_DIR . "/simplepie")) {
-					$new_rss_hash = sha1($feed_data);
+			_debug("fetch done.", $debug_enabled);
 
-					if ($new_rss_hash != $rss_hash) {
-						_debug("saving $cache_filename", $debug_enabled);
-						@file_put_contents($cache_filename, $feed_data);
-					}
+			// cache vanilla feed data for re-use
+			if ($feed_data && !$auth_pass && !$auth_login && is_writable(CACHE_DIR . "/simplepie")) {
+				$new_rss_hash = sha1($feed_data);
+
+				if ($new_rss_hash != $rss_hash) {
+					_debug("saving $cache_filename", $debug_enabled);
+					@file_put_contents($cache_filename, $feed_data);
 				}
 			}
+		}
 
-			if (!$feed_data) {
-				global $fetch_last_error;
-				global $fetch_last_error_code;
+		if (!$feed_data) {
+			global $fetch_last_error;
+			global $fetch_last_error_code;
 
-				_debug("unable to fetch: $fetch_last_error [$fetch_last_error_code]", $debug_enabled);
+			_debug("unable to fetch: $fetch_last_error [$fetch_last_error_code]", $debug_enabled);
 
-				$error_escaped = '';
+			$error_escaped = '';
 
-				// If-Modified-Since
-				if ($fetch_last_error_code != 304) {
-					$error_escaped = db_escape_string($fetch_last_error);
-				} else {
-					_debug("source claims data not modified, nothing to do.", $debug_enabled);
-				}
+			// If-Modified-Since
+			if ($fetch_last_error_code != 304) {
+				$error_escaped = db_escape_string($fetch_last_error);
+			} else {
+				_debug("source claims data not modified, nothing to do.", $debug_enabled);
+			}
 
-				db_query(
-					"UPDATE ttrss_feeds SET last_error = '$error_escaped',
-						last_updated = NOW() WHERE id = '$feed'");
+			db_query(
+				"UPDATE ttrss_feeds SET last_error = '$error_escaped',
+					last_updated = NOW() WHERE id = '$feed'");
 
-				return;
-			}
+			return;
 		}
 
 		foreach ($pluginhost->get_hooks(PluginHost::HOOK_FEED_FETCHED) as $plugin) {
@@ -797,7 +780,7 @@
 				$matched_rules = array();
 
 				$article_filters = get_article_filters($filters, $article["title"],
-					$article["content"], $article["link"], 0, $article["author"],
+					$article["content"], $article["link"], $article["author"],
 					$article["tags"], $matched_rules);
 
 				if ($debug_enabled) {
@@ -1224,11 +1207,12 @@
 				last_updated = NOW() WHERE id = '$feed'");
 
 			unset($rss);
+			return;
 		}
 
 		_debug("done", $debug_enabled);
 
-		return $rss;
+		return true;
 	}
 
 	function cache_enclosures($enclosures, $site_url, $debug) {
@@ -1369,7 +1353,7 @@
 		return $params;
 	}
 
-	function get_article_filters($filters, $title, $content, $link, $timestamp, $author, $tags, &$matched_rules = false) {
+	function get_article_filters($filters, $title, $content, $link, $author, $tags, &$matched_rules = false) {
 		$matches = array();
 
 		foreach ($filters as $filter) {
@@ -1505,15 +1489,6 @@
 			mb_strtolower(strip_tags($title), 'utf-8'));
 	}
 
-	/* function verify_feed_xml($feed_data) {
-		libxml_use_internal_errors(true);
-		$doc = new DOMDocument();
-		$doc->loadXML($feed_data);
-		$error = libxml_get_last_error();
-		libxml_clear_errors();
-		return $error;
-	} */
-
 	function cleanup_counters_cache($debug) {
 		$result = db_query("DELETE FROM ttrss_counters_cache
 			WHERE feed_id > 0 AND
@@ -1529,7 +1504,7 @@
 				ttrss_cat_counters_cache.owner_uid = ttrss_feed_categories.owner_uid) = 0");
 		$crows = db_affected_rows($result);
 
-		_debug("Removed $frows (feeds) $crows (cats) orphaned counter cache entries.");
+		if ($debug) _debug("Removed $frows (feeds) $crows (cats) orphaned counter cache entries.");
 	}
 
 	function housekeeping_user($owner_uid) {
diff --git a/include/sanity_check.php b/include/sanity_check.php
index f1181f88c0d69bc7f3a5b3e9c89bd6e8fd512b6b..3b3e281ec7932c07f16630df73f8c52d51a41ff3 100755
--- a/include/sanity_check.php
+++ b/include/sanity_check.php
@@ -1,6 +1,5 @@
 <?php
-	/*
-	 * WARNING!
+	/* WARNING!
 	 *
 	 * If you modify this file, you are ON YOUR OWN!
 	 *
@@ -21,6 +20,9 @@
 		return $url_path;
 	}
 
+	/**
+	 * @SuppressWarnings(PHPMD.UnusedLocalVariable)
+	 */
 	function initial_sanity_check() {
 
 		$errors = array();
diff --git a/include/sessions.php b/include/sessions.php
index 1ed9be5504bd2fb1021c713a4b9c285c8ef0f0a5..e955c70b26087cf7d7ca0bd413095c8121c23638 100644
--- a/include/sessions.php
+++ b/include/sessions.php
@@ -23,7 +23,7 @@
 	ini_set("session.gc_maxlifetime", $session_expire);
 	ini_set("session.cookie_lifetime", min(0, SESSION_COOKIE_LIFETIME));
 
-	function session_get_schema_version($nocache = false) {
+	function session_get_schema_version() {
 		global $schema_version;
 
 		if (!$schema_version) {
@@ -39,7 +39,7 @@
 	function validate_session() {
 		if (SINGLE_USER_MODE) return true;
 
-		if (isset($_SESSION["ref_schema_version"]) && $_SESSION["ref_schema_version"] != session_get_schema_version(true)) {
+		if (isset($_SESSION["ref_schema_version"]) && $_SESSION["ref_schema_version"] != session_get_schema_version()) {
 			$_SESSION["login_error_msg"] =
 				__("Session failed to validate (schema version changed)");
 			return false;
@@ -72,7 +72,9 @@
 		return true;
 	}
 
-
+	/**
+	 * @SuppressWarnings(PHPMD.UnusedFormalParameter)
+	 */
 	function ttrss_open ($s, $n) {
 		return true;
 	}
@@ -117,6 +119,9 @@
 		return true;
 	}
 
+	/**
+	 * @SuppressWarnings(PHPMD.UnusedFormalParameter)
+	 */
 	function ttrss_gc ($expire) {
 		Db::get()->query("DELETE FROM ttrss_sessions WHERE expire < " . time());
 
diff --git a/update.php b/update.php
index 23289f1d1fe539c6c285594c871b9e2f84311790..2245ea02c90ddb27cb948a8017b40a714728e025 100755
--- a/update.php
+++ b/update.php
@@ -401,7 +401,7 @@
 
 		$_REQUEST['xdebug'] = 1;
 
-		$rc = is_object(update_rss_feed($feed)) ? 0 : 1;
+		$rc = update_rss_feed($feed) != false ? 0 : 1;
 
 		exit($rc);
 	}