Removed unused variables.

src/Services/EntityURLGenerator.php

@@ -383,7 +383,7 @@ class EntityURLGenerator
         //Check if we have an direct mapping for the given class
         if (! array_key_exists($class, $map)) {
             //Check if we need to check inheritance by looping through our map
-            foreach ($map as $key => $value) {
+            foreach (array_keys($map) as $key) {
                 if (is_a($entity, $key)) {
                     return $map[$key];
                 }

src/Services/LogSystem/EventCommentHelper.php

@@ -31,7 +31,7 @@ class EventCommentHelper
 
     public function __construct()
     {
-        $message = null;
+        $this->message = null;
     }
 
     /**

src/Services/LogSystem/EventUndoHelper.php

@@ -37,7 +37,7 @@ class EventUndoHelper
 
     public function __construct()
     {
-        $undone_event = null;
+        $this->undone_event = null;
         $this->mode = self::MODE_UNDO;
     }
 

src/Services/Parameters/ParameterExtractor.php

@@ -69,7 +69,7 @@ class ParameterExtractor
         $matches = [];
         \preg_match($regex, $input, $matches);
         if (! empty($matches)) {
-            [$raw, $name, $value] = $matches;
+            [, $name, $value] = $matches;
             $value = trim($value);
 
             //Dont allow empty names or values (these are a sign of an invalid extracted string)