diff --git a/inc/changelog.php b/inc/changelog.php
index d1ef7973e33ce4889356146306589034d4a1c94c..f4731021ca48c63e14eae6d414eb02132cf72866 100644
--- a/inc/changelog.php
+++ b/inc/changelog.php
@@ -849,18 +849,17 @@ abstract class ChangeLog {
     public function isCurrentRevision($rev) {
         return $rev == @filemtime($this->getFilename());
     }
-    
+
     /**
-    * Return an existing revision for a specific date which is 
+    * Return an existing revision for a specific date which is
     * the current one or younger or equal then the date
     *
-    * @param string $id 
     * @param number $date_at timestamp
     * @return string revision ('' for current)
     */
     function getLastRevisionAt($date_at){
         //requested date_at(timestamp) younger or equal then modified_time($this->id) => load current
-        if($date_at >= @filemtime($this->getFilename())) { 
+        if($date_at >= @filemtime($this->getFilename())) {
             return '';
         } else if ($rev = $this->getRelativeRevision($date_at+1, -1)) { //+1 to get also the requested date revision
             return $rev;
@@ -1049,6 +1048,12 @@ class MediaChangelog extends ChangeLog {
  *
  * @author Ben Coburn <btcoburn@silicodon.net>
  * @author Kate Arzamastseva <pshns@ukr.net>
+ *
+ * @param string $id
+ * @param int    $rev
+ * @param int    $chunk_size
+ * @param bool   $media
+ * @return array|bool
  */
 function getRevisionInfo($id, $rev, $chunk_size = 8192, $media = false) {
     dbg_deprecated('class PageChangeLog or class MediaChangelog');
diff --git a/inc/pageutils.php b/inc/pageutils.php
index 3757126610c259f8b26de4e867b60a120d2fe1bd..a5bf039d50215548416701516afb25906a3f6006 100644
--- a/inc/pageutils.php
+++ b/inc/pageutils.php
@@ -243,7 +243,6 @@ function sectionID($title,&$check) {
     return $title;
 }
 
-
 /**
  * Wiki page existence check
  *
@@ -251,9 +250,10 @@ function sectionID($title,&$check) {
  *
  * @author Chris Smith <chris@jalakai.co.uk>
  *
- * @param string     $id     page id
- * @param string|int $rev    empty or revision timestamp
- * @param bool       $clean  flag indicating that $id should be cleaned (see wikiFN as well)
+ * @param string $id page id
+ * @param string|int $rev empty or revision timestamp
+ * @param bool $clean flag indicating that $id should be cleaned (see wikiFN as well)
+ * @param bool $date_at
  * @return bool exists?
  */
 function page_exists($id,$rev='',$clean=true, $date_at=false) {
@@ -489,9 +489,11 @@ function resolve_id($ns,$id,$clean=true){
  *
  * @author Andreas Gohr <andi@splitbrain.org>
  *
- * @param string  $ns     namespace which is context of id
- * @param string &$page   (reference) relative media id, updated to resolved id
- * @param bool   &$exists (reference) updated with existance of media
+ * @param string $ns namespace which is context of id
+ * @param string &$page (reference) relative media id, updated to resolved id
+ * @param bool &$exists (reference) updated with existance of media
+ * @param int|string $rev
+ * @param bool $date_at
  */
 function resolve_mediaid($ns,&$page,&$exists,$rev='',$date_at=false){
     $page   = resolve_id($ns,$page);
@@ -502,7 +504,7 @@ function resolve_mediaid($ns,&$page,&$exists,$rev='',$date_at=false){
             $rev = $medialog_rev;
         }
     }
-    
+
     $file   = mediaFN($page,$rev);
     $exists = file_exists($file);
 }
@@ -512,9 +514,11 @@ function resolve_mediaid($ns,&$page,&$exists,$rev='',$date_at=false){
  *
  * @author Andreas Gohr <andi@splitbrain.org>
  *
- * @param string  $ns     namespace which is context of id
- * @param string &$page   (reference) relative page id, updated to resolved id
- * @param bool   &$exists (reference) updated with existance of media
+ * @param string $ns namespace which is context of id
+ * @param string &$page (reference) relative page id, updated to resolved id
+ * @param bool &$exists (reference) updated with existance of media
+ * @param string $rev
+ * @param bool $date_at
  */
 function resolve_pageid($ns,&$page,&$exists,$rev='',$date_at=false ){
     global $conf;
diff --git a/inc/parserutils.php b/inc/parserutils.php
index 8650f974f80a1442d914a4ee8b9422a77acf5519..5b96d39feba76a558d2189d6323319516aa4d92a 100644
--- a/inc/parserutils.php
+++ b/inc/parserutils.php
@@ -121,15 +121,21 @@ function p_cached_output($file, $format='xhtml', $id='') {
     $cache = new cache_renderer($id, $file, $format);
     if ($cache->useCache()) {
         $parsed = $cache->retrieveCache(false);
-        if($conf['allowdebug'] && $format=='xhtml') $parsed .= "\n<!-- cachefile {$cache->cache} used -->\n";
+        if($conf['allowdebug'] && $format=='xhtml') {
+            $parsed .= "\n<!-- cachefile {$cache->cache} used -->\n";
+        }
     } else {
         $parsed = p_render($format, p_cached_instructions($file,false,$id), $info);
 
         if ($info['cache'] && $cache->storeCache($parsed)) {              // storeCache() attempts to save cachefile
-            if($conf['allowdebug'] && $format=='xhtml') $parsed .= "\n<!-- no cachefile used, but created {$cache->cache} -->\n";
+            if($conf['allowdebug'] && $format=='xhtml') {
+                $parsed .= "\n<!-- no cachefile used, but created {$cache->cache} -->\n";
+            }
         }else{
             $cache->removeCache();                     //try to delete cachefile
-            if($conf['allowdebug'] && $format=='xhtml') $parsed .= "\n<!-- no cachefile used, caching forbidden -->\n";
+            if($conf['allowdebug'] && $format=='xhtml') {
+                $parsed .= "\n<!-- no cachefile used, caching forbidden -->\n";
+            }
         }
     }
 
@@ -616,8 +622,9 @@ function p_sort_modes($a, $b){
  * @author Andreas Gohr <andi@splitbrain.org>
  *
  * @param string $mode
- * @param array|null|false  $instructions
- * @param array  $info returns render info like enabled toc and cache
+ * @param array|null|false $instructions
+ * @param array $info returns render info like enabled toc and cache
+ * @param string $date_at
  * @return null|string rendered output
  */
 function p_render($mode,$instructions,&$info,$date_at=''){
@@ -632,7 +639,7 @@ function p_render($mode,$instructions,&$info,$date_at=''){
     if($date_at) {
         $Renderer->date_at = $date_at;
     }
-    
+
     $Renderer->smileys = getSmileys();
     $Renderer->entities = getEntities();
     $Renderer->acronyms = getAcronyms();