diff --git a/README.md b/README.md
index 5e2e293..4ef8f16 100644
--- a/README.md
+++ b/README.md
@@ -48,7 +48,6 @@ You can donate any amount of your choice by [clicking here](https://www.paypal.c
 		- [Namespaces](#namespaces)
 		- [Subdomain-routing](#subdomain-routing)
 		- [Route prefixes](#route-prefixes)
-	- [Partial groups](#partial-groups)
 	- [Form Method Spoofing](#form-method-spoofing)
 	- [Accessing The Current Route](#accessing-the-current-route)
 	- [Other examples](#other-examples)
@@ -631,6 +630,23 @@ SimpleRouter::group(['namespace' => 'Admin'], function () {
 });
 ```
 
+You can add parameters to the prefixes of your routes.
+
+Parameters from your previous routes will be injected 
+into your routes after any route-required parameters, starting from oldest to newest.
+
+```php
+SimpleRouter::group(['prefix' => '/lang/{lang}'], function ($language) {
+    
+    SimpleRouter::get('/about', function($language) {
+    	
+    	// Will match /lang/da/about
+    	
+    });
+    
+});
+```
+
 ### Subdomain-routing
 
 Route groups may also be used to handle sub-domain routing. Sub-domains may be assigned route parameters just like route urls, allowing you to capture a portion of the sub-domain for usage in your route or controller. The sub-domain may be specified using the `domain` key on the group attribute array:
@@ -655,30 +671,16 @@ SimpleRouter::group(['prefix' => '/admin'], function () {
 });
 ```
 
-## Partial groups
-
-Partial router groups has the same benefits as a normal group, but supports parameters and are only rendered once the url has matched.
-Partial groups will render once a part of the url has matched.
-
-This can be extremely useful in situations, where you only want special routes to be added, when a certain criteria or logic has been met.
-
-**NOTE:** Use partial groups with caution as routes added within are only rendered and available once the url of the partial-group has matched. This can cause `url()` not to find urls for the routes added within.
-
-**Example:**
+You can also use parameters in your groups:
 
 ```php
-SimpleRouter::partialGroup('/lang/{language}', function ($language) {
-
-    SimpleRouter::get('/', function($language) {
-
-        // Matches The "/lang/da" URL
-
+SimpleRouter::group(['prefix' => '/lang/{language}'], function ($language) {
+    SimpleRouter::get('/users', function ($language)    {
+        // Matches The "/lang/da/users" URL
     });
-
 });
 ```
 
-
 ## Form Method Spoofing
 
 HTML forms do not support `PUT`, `PATCH` or `DELETE` actions. So, when defining `PUT`, `PATCH` or `DELETE` routes that are called from an HTML form, you will need to add a hidden `_method` field to the form. The value sent with the `_method` field will be used as the HTTP request method:
@@ -1493,6 +1495,18 @@ class MyCustomClassLoader implements IClassLoader
 
         return new $class();
     }
+    
+    /**
+     * Called when loading class method
+     * @param object $class
+     * @param string $method
+     * @param array $parameters
+     * @return object
+     */
+    public function loadClassMethod($class, string $method, array $parameters)
+    {
+        return call_user_func_array([$class, $method], array_values($parameters));
+    }
 
     /**
      * Load closure
@@ -1503,7 +1517,7 @@ class MyCustomClassLoader implements IClassLoader
      */
     public function loadClosure(Callable $closure, array $parameters)
     {
-        return \call_user_func_array($closure, $parameters);
+        return \call_user_func_array($closure, array_values($parameters));
     }
 
 }
@@ -1520,6 +1534,8 @@ SimpleRouter::setCustomClassLoader(new MyCustomClassLoader());
 php-di support was discontinued by version 4.3, however you can easily add it again by creating your own class-loader like the example below:
 
 ```php
+use Pecee\SimpleRouter\Exceptions\ClassNotFoundHttpException;
+
 class MyCustomClassLoader implements IClassLoader
 {
 
@@ -1528,7 +1544,7 @@ class MyCustomClassLoader implements IClassLoader
     public function __construct()
     {
         // Create our new php-di container
-        $container = (new \DI\ContainerBuilder())
+        $this->container = (new \DI\ContainerBuilder())
                     ->useAutowiring(true)
                     ->build();
     }
@@ -1546,15 +1562,27 @@ class MyCustomClassLoader implements IClassLoader
             throw new NotFoundHttpException(sprintf('Class "%s" does not exist', $class), 404);
         }
 
-        if ($this->container !== null) {
-            try {
-                return $this->container->get($class);
-            } catch (\Exception $e) {
-                throw new NotFoundHttpException($e->getMessage(), (int)$e->getCode(), $e->getPrevious());
-            }
-        }
-
-        return new $class();
+		try {
+			return $this->container->get($class);
+		} catch (\Exception $e) {
+			throw new NotFoundHttpException($e->getMessage(), (int)$e->getCode(), $e->getPrevious());
+		}
+    }
+    
+    /**
+     * Called when loading class method
+     * @param object $class
+     * @param string $method
+     * @param array $parameters
+     * @return object
+     */
+    public function loadClassMethod($class, string $method, array $parameters)
+    {
+		try {
+			return $this->container->call([$class, $method], $parameters);
+		} catch (\Exception $e) {
+			throw new NotFoundHttpException($e->getMessage(), (int)$e->getCode(), $e->getPrevious());
+		}
     }
 
     /**
@@ -1564,19 +1592,14 @@ class MyCustomClassLoader implements IClassLoader
      * @param array $parameters
      * @return mixed
      */
-    public function loadClosure(Callable $closure, array $parameters)
+    public function loadClosure(callable $closure, array $parameters)
     {
-        if ($this->container !== null) {
-            try {
-                return $this->container->call($closure, $parameters);
-            } catch (\Exception $e) {
-                throw new NotFoundHttpException($e->getMessage(), (int)$e->getCode(), $e->getPrevious());
-            }
-        }
-
-        return \call_user_func_array($closure, $parameters);
+		try {
+			return $this->container->call($closure, $parameters);
+		} catch (\Exception $e) {
+			throw new NotFoundHttpException($e->getMessage(), (int)$e->getCode(), $e->getPrevious());
+		}
     }
-
 }
 ```
 
diff --git a/src/Pecee/Http/Exceptions/MalformedUrlException.php b/src/Pecee/Http/Exceptions/MalformedUrlException.php
index 8556d1b..7f7fc14 100644
--- a/src/Pecee/Http/Exceptions/MalformedUrlException.php
+++ b/src/Pecee/Http/Exceptions/MalformedUrlException.php
@@ -2,7 +2,9 @@
 
 namespace Pecee\Http\Exceptions;
 
-class MalformedUrlException extends \Exception
+use Exception;
+
+class MalformedUrlException extends Exception
 {
 
 }
\ No newline at end of file
diff --git a/src/Pecee/Http/Input/InputHandler.php b/src/Pecee/Http/Input/InputHandler.php
index 13bfe5c..9586720 100644
--- a/src/Pecee/Http/Input/InputHandler.php
+++ b/src/Pecee/Http/Input/InputHandler.php
@@ -63,7 +63,7 @@ class InputHandler
     public function parseInputs(): void
     {
         /* Parse get requests */
-        if (\count($_GET) !== 0) {
+        if (count($_GET) !== 0) {
             $this->originalParams = $_GET;
             $this->get = $this->parseInputItem($this->originalParams);
         }
@@ -85,12 +85,12 @@ class InputHandler
             }
         }
 
-        if (\count($this->originalPost) !== 0) {
+        if (count($this->originalPost) !== 0) {
             $this->post = $this->parseInputItem($this->originalPost);
         }
 
         /* Parse get requests */
-        if (\count($_FILES) !== 0) {
+        if (count($_FILES) !== 0) {
             $this->originalFile = $_FILES;
             $this->file = $this->parseFiles($this->originalFile);
         }
@@ -108,13 +108,13 @@ class InputHandler
         foreach ($files as $key => $value) {
 
             // Parse multi dept file array
-            if(isset($value['name']) === false && \is_array($value) === true) {
+            if(isset($value['name']) === false && is_array($value) === true) {
                 $list[$key] = $this->parseFiles($value, $key);
                 continue;
             }
 
             // Handle array input
-            if (\is_array($value['name']) === false) {
+            if (is_array($value['name']) === false) {
                 $values['index'] = $parentKey ?? $key;
 
                 try {
@@ -156,7 +156,7 @@ class InputHandler
 
         foreach ($values as $key => $value) {
 
-            if (\is_array($original['name'][$key]) === false) {
+            if (is_array($original['name'][$key]) === false) {
 
                 try {
 
@@ -210,7 +210,7 @@ class InputHandler
         foreach ($array as $key => $value) {
 
             // Handle array input
-            if (\is_array($value) === true) {
+            if (is_array($value) === true) {
                 $value = $this->parseInputItem($value);
             }
 
@@ -231,15 +231,19 @@ class InputHandler
     {
         $element = null;
 
-        if (\count($methods) === 0 || \in_array(Request::REQUEST_TYPE_GET, $methods, true) === true) {
+        if(count($methods) > 0) {
+            $methods = is_array(...$methods) ? array_values(...$methods) : $methods;
+        }
+
+        if (count($methods) === 0 || in_array(Request::REQUEST_TYPE_GET, $methods, true) === true) {
             $element = $this->get($index);
         }
 
-        if (($element === null && \count($methods) === 0) || (\count($methods) !== 0 && \in_array(Request::REQUEST_TYPE_POST, $methods, true) === true)) {
+        if (($element === null && count($methods) === 0) || (count($methods) !== 0 && in_array(Request::REQUEST_TYPE_POST, $methods, true) === true)) {
             $element = $this->post($index);
         }
 
-        if (($element === null && \count($methods) === 0) || (\count($methods) !== 0 && \in_array('file', $methods, true) === true)) {
+        if (($element === null && count($methods) === 0) || (count($methods) !== 0 && in_array('file', $methods, true) === true)) {
             $element = $this->file($index);
         }
 
@@ -256,7 +260,7 @@ class InputHandler
                 $item = $item->getValue();
             }
 
-            $output[$key] = \is_array($item) ? $this->getValueFromArray($item) : $item;
+            $output[$key] = is_array($item) ? $this->getValueFromArray($item) : $item;
         }
 
         return $output;
@@ -279,13 +283,13 @@ class InputHandler
         }
 
         /* Handle collection */
-        if (\is_array($input) === true) {
+        if (is_array($input) === true) {
             $output = $this->getValueFromArray($input);
 
-            return (\count($output) === 0) ? $defaultValue : $output;
+            return (count($output) === 0) ? $defaultValue : $output;
         }
 
-        return ($input === null || (\is_string($input) && trim($input) === '')) ? $defaultValue : $input;
+        return ($input === null || (is_string($input) && trim($input) === '')) ? $defaultValue : $input;
     }
 
     /**
@@ -344,7 +348,7 @@ class InputHandler
     public function all(array $filter = []): array
     {
         $output = $this->originalParams + $this->originalPost + $this->originalFile;
-        $output = (\count($filter) > 0) ? \array_intersect_key($output, \array_flip($filter)) : $output;
+        $output = (count($filter) > 0) ? array_intersect_key($output, array_flip($filter)) : $output;
 
         foreach ($filter as $filterKey) {
             if (array_key_exists($filterKey, $output) === false) {
diff --git a/src/Pecee/Http/Input/InputItem.php b/src/Pecee/Http/Input/InputItem.php
index 2322bd3..85ae93d 100644
--- a/src/Pecee/Http/Input/InputItem.php
+++ b/src/Pecee/Http/Input/InputItem.php
@@ -2,7 +2,10 @@
 
 namespace Pecee\Http\Input;
 
-class InputItem implements IInputItem, \IteratorAggregate
+use ArrayIterator;
+use IteratorAggregate;
+
+class InputItem implements IInputItem, IteratorAggregate
 {
     public $index;
     public $name;
@@ -75,11 +78,11 @@ class InputItem implements IInputItem, \IteratorAggregate
     public function __toString(): string
     {
         $value = $this->getValue();
-        return (\is_array($value) === true) ? json_encode($value) : $value;
+        return (is_array($value) === true) ? json_encode($value) : $value;
     }
 
-    public function getIterator(): \ArrayIterator
+    public function getIterator(): ArrayIterator
     {
-        return new \ArrayIterator($this->getValue());
+        return new ArrayIterator($this->getValue());
     }
 }
\ No newline at end of file
diff --git a/src/Pecee/Http/Middleware/BaseCsrfVerifier.php b/src/Pecee/Http/Middleware/BaseCsrfVerifier.php
index 392bcf9..44540ca 100644
--- a/src/Pecee/Http/Middleware/BaseCsrfVerifier.php
+++ b/src/Pecee/Http/Middleware/BaseCsrfVerifier.php
@@ -30,17 +30,17 @@ class BaseCsrfVerifier implements IMiddleware
      */
     protected function skip(Request $request): bool
     {
-        if ($this->except === null || \count($this->except) === 0) {
+        if ($this->except === null || count($this->except) === 0) {
             return false;
         }
 
-        $max = \count($this->except) - 1;
+        $max = count($this->except) - 1;
 
         for ($i = $max; $i >= 0; $i--) {
             $url = $this->except[$i];
 
             $url = rtrim($url, '/');
-            if ($url[\strlen($url) - 1] === '*') {
+            if ($url[strlen($url) - 1] === '*') {
                 $url = rtrim($url, '*');
                 $skip = $request->getUrl()->contains($url);
             } else {
diff --git a/src/Pecee/Http/Middleware/Exceptions/TokenMismatchException.php b/src/Pecee/Http/Middleware/Exceptions/TokenMismatchException.php
index 7e07c7a..78f24cc 100644
--- a/src/Pecee/Http/Middleware/Exceptions/TokenMismatchException.php
+++ b/src/Pecee/Http/Middleware/Exceptions/TokenMismatchException.php
@@ -2,7 +2,9 @@
 
 namespace Pecee\Http\Middleware\Exceptions;
 
-class TokenMismatchException extends \Exception
+use Exception;
+
+class TokenMismatchException extends Exception
 {
 
 }
\ No newline at end of file
diff --git a/src/Pecee/Http/Request.php b/src/Pecee/Http/Request.php
index fddb573..84f6d04 100644
--- a/src/Pecee/Http/Request.php
+++ b/src/Pecee/Http/Request.php
@@ -369,7 +369,7 @@ class Request
      */
     public function isPostBack(): bool
     {
-        return \in_array($this->getMethod(), static::$requestTypesPost, true);
+        return in_array($this->getMethod(), static::$requestTypesPost, true);
     }
 
     /**
@@ -475,7 +475,7 @@ class Request
      */
     public function getLoadedRoute(): ?ILoadableRoute
     {
-        return (\count($this->loadedRoutes) > 0) ? end($this->loadedRoutes) : null;
+        return (count($this->loadedRoutes) > 0) ? end($this->loadedRoutes) : null;
     }
 
     /**
diff --git a/src/Pecee/Http/Response.php b/src/Pecee/Http/Response.php
index e7a7da9..44a2ee0 100644
--- a/src/Pecee/Http/Response.php
+++ b/src/Pecee/Http/Response.php
@@ -2,6 +2,7 @@
 
 namespace Pecee\Http;
 
+use JsonSerializable;
 use Pecee\Exceptions\InvalidArgumentException;
 
 class Response
@@ -85,14 +86,14 @@ class Response
 
     /**
      * Json encode
-     * @param array|\JsonSerializable $value
+     * @param array|JsonSerializable $value
      * @param ?int $options JSON options Bitmask consisting of JSON_HEX_QUOT, JSON_HEX_TAG, JSON_HEX_AMP, JSON_HEX_APOS, JSON_NUMERIC_CHECK, JSON_PRETTY_PRINT, JSON_UNESCAPED_SLASHES, JSON_FORCE_OBJECT, JSON_PRESERVE_ZERO_FRACTION, JSON_UNESCAPED_UNICODE, JSON_PARTIAL_OUTPUT_ON_ERROR.
      * @param int $dept JSON debt.
      * @throws InvalidArgumentException
      */
     public function json($value, ?int $options = null, int $dept = 512): void
     {
-        if (($value instanceof \JsonSerializable) === false && \is_array($value) === false) {
+        if (($value instanceof JsonSerializable) === false && is_array($value) === false) {
             throw new InvalidArgumentException('Invalid type for parameter "value". Must be of type array or object implementing the \JsonSerializable interface.');
         }
 
diff --git a/src/Pecee/Http/Security/CookieTokenProvider.php b/src/Pecee/Http/Security/CookieTokenProvider.php
index 35f1021..6c9cbc9 100644
--- a/src/Pecee/Http/Security/CookieTokenProvider.php
+++ b/src/Pecee/Http/Security/CookieTokenProvider.php
@@ -2,6 +2,7 @@
 
 namespace Pecee\Http\Security;
 
+use Exception;
 use Pecee\Http\Security\Exceptions\SecurityException;
 
 class CookieTokenProvider implements ITokenProvider
@@ -34,7 +35,7 @@ class CookieTokenProvider implements ITokenProvider
     {
         try {
             return bin2hex(random_bytes(32));
-        } catch (\Exception $e) {
+        } catch (Exception $e) {
             throw new SecurityException($e->getMessage(), (int)$e->getCode(), $e->getPrevious());
         }
     }
diff --git a/src/Pecee/Http/Security/Exceptions/SecurityException.php b/src/Pecee/Http/Security/Exceptions/SecurityException.php
index b7d2dc2..0588d72 100644
--- a/src/Pecee/Http/Security/Exceptions/SecurityException.php
+++ b/src/Pecee/Http/Security/Exceptions/SecurityException.php
@@ -2,7 +2,9 @@
 
 namespace Pecee\Http\Security\Exceptions;
 
-class SecurityException extends \Exception
+use Exception;
+
+class SecurityException extends Exception
 {
 
 }
\ No newline at end of file
diff --git a/src/Pecee/Http/Url.php b/src/Pecee/Http/Url.php
index 256e4a5..fb3c9c9 100644
--- a/src/Pecee/Http/Url.php
+++ b/src/Pecee/Http/Url.php
@@ -2,9 +2,10 @@
 
 namespace Pecee\Http;
 
+use JsonSerializable;
 use Pecee\Http\Exceptions\MalformedUrlException;
 
-class Url implements \JsonSerializable
+class Url implements JsonSerializable
 {
     private $originalUrl;
 
@@ -409,7 +410,7 @@ class Url implements \JsonSerializable
      */
     public static function arrayToParams(array $getParams = [], bool $includeEmpty = true): string
     {
-        if (\count($getParams) !== 0) {
+        if (count($getParams) !== 0) {
 
             if ($includeEmpty === false) {
                 $getParams = array_filter($getParams, static function ($item) {
diff --git a/src/Pecee/SimpleRouter/ClassLoader/ClassLoader.php b/src/Pecee/SimpleRouter/ClassLoader/ClassLoader.php
index 027028e..cb70e69 100644
--- a/src/Pecee/SimpleRouter/ClassLoader/ClassLoader.php
+++ b/src/Pecee/SimpleRouter/ClassLoader/ClassLoader.php
@@ -22,6 +22,18 @@ class ClassLoader implements IClassLoader
         return new $class();
     }
 
+    /**
+     * Called when loading class method
+     * @param object $class
+     * @param string $method
+     * @param array $parameters
+     * @return object
+     */
+    public function loadClassMethod($class, string $method, array $parameters)
+    {
+        return call_user_func_array([$class, $method], array_values($parameters));
+    }
+
     /**
      * Load closure
      *
@@ -31,7 +43,7 @@ class ClassLoader implements IClassLoader
      */
     public function loadClosure(Callable $closure, array $parameters)
     {
-        return \call_user_func_array($closure, $parameters);
+        return call_user_func_array($closure, array_values($parameters));
     }
 
 }
\ No newline at end of file
diff --git a/src/Pecee/SimpleRouter/ClassLoader/IClassLoader.php b/src/Pecee/SimpleRouter/ClassLoader/IClassLoader.php
index 8eb8cd1..2ac88bd 100644
--- a/src/Pecee/SimpleRouter/ClassLoader/IClassLoader.php
+++ b/src/Pecee/SimpleRouter/ClassLoader/IClassLoader.php
@@ -12,6 +12,15 @@ interface IClassLoader
      */
     public function loadClass(string $class);
 
+    /**
+     * Called when loading class method
+     * @param object $class
+     * @param string $method
+     * @param array $parameters
+     * @return object
+     */
+    public function loadClassMethod($class, string $method, array $parameters);
+
     /**
      * Called when loading method
      *
@@ -21,4 +30,4 @@ interface IClassLoader
      */
     public function loadClosure(Callable $closure, array $parameters);
 
-}
+}
\ No newline at end of file
diff --git a/src/Pecee/SimpleRouter/Event/EventArgument.php b/src/Pecee/SimpleRouter/Event/EventArgument.php
index 092f9a0..fc88cd0 100644
--- a/src/Pecee/SimpleRouter/Event/EventArgument.php
+++ b/src/Pecee/SimpleRouter/Event/EventArgument.php
@@ -2,6 +2,7 @@
 
 namespace Pecee\SimpleRouter\Event;
 
+use InvalidArgumentException;
 use Pecee\Http\Request;
 use Pecee\SimpleRouter\Router;
 
@@ -91,11 +92,11 @@ class EventArgument implements IEventArgument
     /**
      * @param string $name
      * @param mixed $value
-     * @throws \InvalidArgumentException
+     * @throws InvalidArgumentException
      */
     public function __set(string $name, $value)
     {
-        throw new \InvalidArgumentException('Not supported');
+        throw new InvalidArgumentException('Not supported');
     }
 
     /**
diff --git a/src/Pecee/SimpleRouter/Exceptions/HttpException.php b/src/Pecee/SimpleRouter/Exceptions/HttpException.php
index e03c4a7..4a63af8 100644
--- a/src/Pecee/SimpleRouter/Exceptions/HttpException.php
+++ b/src/Pecee/SimpleRouter/Exceptions/HttpException.php
@@ -2,7 +2,9 @@
 
 namespace Pecee\SimpleRouter\Exceptions;
 
-class HttpException extends \Exception
+use Exception;
+
+class HttpException extends Exception
 {
 
 }
\ No newline at end of file
diff --git a/src/Pecee/SimpleRouter/Handlers/CallbackExceptionHandler.php b/src/Pecee/SimpleRouter/Handlers/CallbackExceptionHandler.php
index 296c228..adc8ebe 100644
--- a/src/Pecee/SimpleRouter/Handlers/CallbackExceptionHandler.php
+++ b/src/Pecee/SimpleRouter/Handlers/CallbackExceptionHandler.php
@@ -2,6 +2,8 @@
 
 namespace Pecee\SimpleRouter\Handlers;
 
+use Closure;
+use Exception;
 use Pecee\Http\Request;
 
 /**
@@ -17,19 +19,19 @@ class CallbackExceptionHandler implements IExceptionHandler
 
     protected $callback;
 
-    public function __construct(\Closure $callback)
+    public function __construct(Closure $callback)
     {
         $this->callback = $callback;
     }
 
     /**
      * @param Request $request
-     * @param \Exception $error
+     * @param Exception $error
      */
-    public function handleError(Request $request, \Exception $error): void
+    public function handleError(Request $request, Exception $error): void
     {
         /* Fire exceptions */
-        \call_user_func($this->callback,
+        call_user_func($this->callback,
             $request,
             $error
         );
diff --git a/src/Pecee/SimpleRouter/Handlers/DebugEventHandler.php b/src/Pecee/SimpleRouter/Handlers/DebugEventHandler.php
index fe4a954..92ff158 100644
--- a/src/Pecee/SimpleRouter/Handlers/DebugEventHandler.php
+++ b/src/Pecee/SimpleRouter/Handlers/DebugEventHandler.php
@@ -2,6 +2,7 @@
 
 namespace Pecee\SimpleRouter\Handlers;
 
+use Closure;
 use Pecee\SimpleRouter\Event\EventArgument;
 use Pecee\SimpleRouter\Router;
 
@@ -10,7 +11,7 @@ class DebugEventHandler implements IEventHandler
 
     /**
      * Debug callback
-     * @var \Closure
+     * @var Closure
      */
     protected $callback;
 
@@ -52,9 +53,9 @@ class DebugEventHandler implements IEventHandler
     /**
      * Set debug callback
      *
-     * @param \Closure $event
+     * @param Closure $event
      */
-    public function setCallback(\Closure $event): void
+    public function setCallback(Closure $event): void
     {
         $this->callback = $event;
     }
diff --git a/src/Pecee/SimpleRouter/Handlers/EventHandler.php b/src/Pecee/SimpleRouter/Handlers/EventHandler.php
index 70b37b3..7bd1f76 100644
--- a/src/Pecee/SimpleRouter/Handlers/EventHandler.php
+++ b/src/Pecee/SimpleRouter/Handlers/EventHandler.php
@@ -2,6 +2,7 @@
 
 namespace Pecee\SimpleRouter\Handlers;
 
+use Closure;
 use Pecee\SimpleRouter\Event\EventArgument;
 use Pecee\SimpleRouter\Router;
 
@@ -125,10 +126,10 @@ class EventHandler implements IEventHandler
      * Register new event
      *
      * @param string $name
-     * @param \Closure $callback
+     * @param Closure $callback
      * @return static
      */
-    public function register(string $name, \Closure $callback): IEventHandler
+    public function register(string $name, Closure $callback): IEventHandler
     {
         if (isset($this->registeredEvents[$name]) === true) {
             $this->registeredEvents[$name][] = $callback;
@@ -175,7 +176,7 @@ class EventHandler implements IEventHandler
     {
         $events = $this->getEvents(static::EVENT_ALL, $name);
 
-        /* @var $event \Closure */
+        /* @var $event Closure */
         foreach ($events as $event) {
             $event(new EventArgument($name, $router, $eventArgs));
         }
diff --git a/src/Pecee/SimpleRouter/Handlers/IExceptionHandler.php b/src/Pecee/SimpleRouter/Handlers/IExceptionHandler.php
index b32a86d..4436c3e 100644
--- a/src/Pecee/SimpleRouter/Handlers/IExceptionHandler.php
+++ b/src/Pecee/SimpleRouter/Handlers/IExceptionHandler.php
@@ -2,14 +2,15 @@
 
 namespace Pecee\SimpleRouter\Handlers;
 
+use Exception;
 use Pecee\Http\Request;
 
 interface IExceptionHandler
 {
     /**
      * @param Request $request
-     * @param \Exception $error
+     * @param Exception $error
      */
-    public function handleError(Request $request, \Exception $error): void;
+    public function handleError(Request $request, Exception $error): void;
 
 }
\ No newline at end of file
diff --git a/src/Pecee/SimpleRouter/Route/LoadableRoute.php b/src/Pecee/SimpleRouter/Route/LoadableRoute.php
index edf414e..68654a2 100644
--- a/src/Pecee/SimpleRouter/Route/LoadableRoute.php
+++ b/src/Pecee/SimpleRouter/Route/LoadableRoute.php
@@ -34,7 +34,7 @@ abstract class LoadableRoute extends Route implements ILoadableRoute
 
         foreach ($this->getMiddlewares() as $middleware) {
 
-            if (\is_object($middleware) === false) {
+            if (is_object($middleware) === false) {
                 $middleware = $router->getClassLoader()->loadClass($middleware);
             }
 
@@ -42,7 +42,7 @@ abstract class LoadableRoute extends Route implements ILoadableRoute
                 throw new HttpException($middleware . ' must be inherit the IMiddleware interface');
             }
 
-            $className = \get_class($middleware);
+            $className = get_class($middleware);
 
             $router->debug('Loading middleware "%s"', $className);
             $middleware->handle($request);
@@ -116,7 +116,7 @@ abstract class LoadableRoute extends Route implements ILoadableRoute
 
         $group = $this->getGroup();
 
-        if ($group !== null && \count($group->getDomains()) !== 0) {
+        if ($group !== null && count($group->getDomains()) !== 0) {
             $url = '//' . $group->getDomains()[0] . $url;
         }
 
@@ -132,7 +132,7 @@ abstract class LoadableRoute extends Route implements ILoadableRoute
 
         foreach (array_keys($params) as $param) {
 
-            if ($parameters === '' || (\is_array($parameters) === true && \count($parameters) === 0)) {
+            if ($parameters === '' || (is_array($parameters) === true && count($parameters) === 0)) {
                 $value = '';
             } else {
                 $p = (array)$parameters;
diff --git a/src/Pecee/SimpleRouter/Route/Route.php b/src/Pecee/SimpleRouter/Route/Route.php
index 72c96c6..0d300ae 100644
--- a/src/Pecee/SimpleRouter/Route/Route.php
+++ b/src/Pecee/SimpleRouter/Route/Route.php
@@ -2,7 +2,6 @@
 
 namespace Pecee\SimpleRouter\Route;
 
-use Pecee\Http\Middleware\IMiddleware;
 use Pecee\Http\Request;
 use Pecee\SimpleRouter\Exceptions\ClassNotFoundHttpException;
 use Pecee\SimpleRouter\Exceptions\NotFoundHttpException;
@@ -52,7 +51,7 @@ abstract class Route implements IRoute
      */
     public function renderRoute(Request $request, Router $router): ?string
     {
-        $router->debug('Starting rendering route "%s"', \get_class($this));
+        $router->debug('Starting rendering route "%s"', get_class($this));
 
         $callback = $this->getCallback();
 
@@ -74,7 +73,7 @@ abstract class Route implements IRoute
         }
 
         /* Render callback function */
-        if (\is_callable($callback) === true) {
+        if (is_callable($callback) === true) {
             $router->debug('Executing callback');
 
             /* When the callback is a function */
@@ -98,9 +97,9 @@ abstract class Route implements IRoute
             throw new ClassNotFoundHttpException($className, $method, sprintf('Method "%s" does not exist in class "%s"', $method, $className), 404, null);
         }
 
-        $router->debug('Executing callback');
+        $router->debug('Executing callback %s -> %s', $className, $method);
 
-        return \call_user_func_array([$class, $method], $parameters);
+        return $router->getClassLoader()->loadClassMethod($class, $method, $parameters);
     }
 
     protected function parseParameters($route, $url, $parameterRegex = null): ?array
@@ -127,7 +126,7 @@ abstract class Route implements IRoute
 
                 $regex = '';
 
-                if ($key < \count($parameters[1])) {
+                if ($key < count($parameters[1])) {
 
                     $name = $parameters[1][$key];
 
@@ -153,12 +152,27 @@ abstract class Route implements IRoute
 
         if (isset($parameters[1]) === true) {
 
+            $groupParameters = $this->getGroup() !== null ? $this->getGroup()->getParameters() : [];
+
+            $lastParams = [];
+
             /* Only take matched parameters with name */
             foreach ((array)$parameters[1] as $name) {
+
+                // Ignore parent parameters
+                if(isset($groupParameters[$name]) === true) {
+                    $lastParams[$name] = $matches[$name];
+                    continue;
+                }
+
                 $values[$name] = (isset($matches[$name]) === true && $matches[$name] !== '') ? $matches[$name] : null;
             }
+
+            $values = array_merge($values, $lastParams);
         }
 
+        $this->originalParameters = $values;
+
         return $values;
     }
 
@@ -171,7 +185,7 @@ abstract class Route implements IRoute
      */
     public function getIdentifier(): string
     {
-        if (\is_string($this->callback) === true && strpos($this->callback, '@') !== false) {
+        if (is_string($this->callback) === true && strpos($this->callback, '@') !== false) {
             return $this->callback;
         }
 
@@ -230,7 +244,6 @@ abstract class Route implements IRoute
         $this->group = $group;
 
         /* Add/merge parent settings with child */
-
         return $this->setSettings($group->toArray(), true);
     }
 
@@ -270,11 +283,11 @@ abstract class Route implements IRoute
 
     public function getMethod(): ?string
     {
-        if (\is_array($this->callback) === true && \count($this->callback) > 1) {
+        if (is_array($this->callback) === true && count($this->callback) > 1) {
             return $this->callback[1];
         }
 
-        if (\is_string($this->callback) === true && strpos($this->callback, '@') !== false) {
+        if (is_string($this->callback) === true && strpos($this->callback, '@') !== false) {
             $tmp = explode('@', $this->callback);
 
             return $tmp[1];
@@ -285,11 +298,11 @@ abstract class Route implements IRoute
 
     public function getClass(): ?string
     {
-        if (\is_array($this->callback) === true && \count($this->callback) > 0) {
+        if (is_array($this->callback) === true && count($this->callback) > 0) {
             return $this->callback[0];
         }
 
-        if (\is_string($this->callback) === true && strpos($this->callback, '@') !== false) {
+        if (is_string($this->callback) === true && strpos($this->callback, '@') !== false) {
             $tmp = explode('@', $this->callback);
 
             return $tmp[0];
@@ -360,15 +373,15 @@ abstract class Route implements IRoute
             $values['namespace'] = $this->namespace;
         }
 
-        if (\count($this->requestMethods) !== 0) {
+        if (count($this->requestMethods) !== 0) {
             $values['method'] = $this->requestMethods;
         }
 
-        if (\count($this->where) !== 0) {
+        if (count($this->where) !== 0) {
             $values['where'] = $this->where;
         }
 
-        if (\count($this->middlewares) !== 0) {
+        if (count($this->middlewares) !== 0) {
             $values['middleware'] = $this->middlewares;
         }
 
@@ -462,7 +475,7 @@ abstract class Route implements IRoute
         /* Sort the parameters after the user-defined param order, if any */
         $parameters = [];
 
-        if (\count($this->originalParameters) !== 0) {
+        if (count($this->originalParameters) !== 0) {
             $parameters = $this->originalParameters;
         }
 
@@ -477,14 +490,6 @@ abstract class Route implements IRoute
      */
     public function setParameters(array $parameters): IRoute
     {
-        /*
-         * If this is the first time setting parameters we store them so we
-         * later can organize the array, in case somebody tried to sort the array.
-         */
-        if (\count($parameters) !== 0 && \count($this->originalParameters) === 0) {
-            $this->originalParameters = $parameters;
-        }
-
         $this->parameters = array_merge($this->parameters, $parameters);
 
         return $this;
diff --git a/src/Pecee/SimpleRouter/Route/RouteController.php b/src/Pecee/SimpleRouter/Route/RouteController.php
index 2b00ec5..2238b9d 100644
--- a/src/Pecee/SimpleRouter/Route/RouteController.php
+++ b/src/Pecee/SimpleRouter/Route/RouteController.php
@@ -35,7 +35,7 @@ class RouteController extends LoadableRoute implements IControllerRoute
             $method = substr($name, strrpos($name, '.') + 1);
             $newName = substr($name, 0, strrpos($name, '.'));
 
-            if (\in_array($method, $this->names, true) === true && strtolower($this->name) === strtolower($newName)) {
+            if (in_array($method, $this->names, true) === true && strtolower($this->name) === strtolower($newName)) {
                 return true;
             }
         }
@@ -67,7 +67,7 @@ class RouteController extends LoadableRoute implements IControllerRoute
             foreach (Request::$requestTypes as $requestType) {
 
                 if (stripos($method, $requestType) === 0) {
-                    $method = (string)substr($method, \strlen($requestType));
+                    $method = (string)substr($method, strlen($requestType));
                     break;
                 }
             }
@@ -77,7 +77,7 @@ class RouteController extends LoadableRoute implements IControllerRoute
 
         $group = $this->getGroup();
 
-        if ($group !== null && \count($group->getDomains()) !== 0) {
+        if ($group !== null && count($group->getDomains()) !== 0) {
             $url .= '//' . $group->getDomains()[0];
         }
 
@@ -102,12 +102,12 @@ class RouteController extends LoadableRoute implements IControllerRoute
         $strippedUrl = trim(str_ireplace($this->url, '/', $url), '/');
         $path = explode('/', $strippedUrl);
 
-        if (\count($path) !== 0) {
+        if (count($path) !== 0) {
 
             $method = (isset($path[0]) === false || trim($path[0]) === '') ? $this->defaultMethod : $path[0];
             $this->method = $request->getMethod() . ucfirst($method);
 
-            $this->parameters = \array_slice($path, 1);
+            $this->parameters = array_slice($path, 1);
 
             // Set callback
             $this->setCallback([$this->controller, $this->method]);
diff --git a/src/Pecee/SimpleRouter/Route/RouteGroup.php b/src/Pecee/SimpleRouter/Route/RouteGroup.php
index 68e9e75..d605091 100644
--- a/src/Pecee/SimpleRouter/Route/RouteGroup.php
+++ b/src/Pecee/SimpleRouter/Route/RouteGroup.php
@@ -7,6 +7,7 @@ use Pecee\SimpleRouter\Handlers\IExceptionHandler;
 
 class RouteGroup extends Route implements IGroupRoute
 {
+    protected $urlRegex = '/^%s\/?/u';
     protected $prefix;
     protected $name;
     protected $domains = [];
@@ -20,7 +21,7 @@ class RouteGroup extends Route implements IGroupRoute
      */
     public function matchDomain(Request $request): bool
     {
-        if ($this->domains === null || \count($this->domains) === 0) {
+        if ($this->domains === null || count($this->domains) === 0) {
             return true;
         }
 
@@ -33,7 +34,7 @@ class RouteGroup extends Route implements IGroupRoute
 
             $parameters = $this->parseParameters($domain, $request->getHost(), '.*');
 
-            if ($parameters !== null && \count($parameters) !== 0) {
+            if ($parameters !== null && count($parameters) !== 0) {
                 $this->parameters = $parameters;
                 return true;
             }
@@ -55,16 +56,27 @@ class RouteGroup extends Route implements IGroupRoute
             return false;
         }
 
-        // Parse parameter
+        if ($this->prefix !== null) {
+            /* Parse parameters from current route */
+            $parameters = $this->parseParameters($this->prefix, $url);
 
-        $prefix = $this->prefix;
+            /* If no custom regular expression or parameters was found on this route, we stop */
+            if ($parameters === null) {
+                return false;
+            }
+
+            /* Set the parameters */
+            $this->setParameters($parameters);
+        }
+
+        $parsedPrefix = $this->prefix;
 
         foreach ($this->getParameters() as $parameter => $value) {
-            $prefix = str_ireplace('{' . $parameter . '}', $value, $prefix);
+            $parsedPrefix = str_ireplace('{' . $parameter . '}', $value, $parsedPrefix);
         }
 
         /* Skip if prefix doesn't match */
-        if ($this->prefix !== null && stripos($url, $prefix) === false) {
+        if ($this->prefix !== null && stripos($url, $parsedPrefix) === false) {
             return false;
         }
 
@@ -204,7 +216,7 @@ class RouteGroup extends Route implements IGroupRoute
             $values['as'] = $this->name;
         }
 
-        if (\count($this->parameters) !== 0) {
+        if (count($this->parameters) !== 0) {
             $values['parameters'] = $this->parameters;
         }
 
diff --git a/src/Pecee/SimpleRouter/Route/RoutePartialGroup.php b/src/Pecee/SimpleRouter/Route/RoutePartialGroup.php
index 1e1a51b..901bd45 100644
--- a/src/Pecee/SimpleRouter/Route/RoutePartialGroup.php
+++ b/src/Pecee/SimpleRouter/Route/RoutePartialGroup.php
@@ -1,47 +1,11 @@
 <?php
-
+/**
+ * @deprecated This class is deprecated and will be removed in future versions.
+ * @see \Pecee\SimpleRouter\Route\RouteGroup
+ */
 namespace Pecee\SimpleRouter\Route;
 
-use Pecee\Http\Request;
-
 class RoutePartialGroup extends RouteGroup implements IPartialGroupRoute
 {
 
-    /**
-     * RoutePartialGroup constructor.
-     */
-    public function __construct()
-    {
-        $this->urlRegex = '/^%s\/?/u';
-    }
-
-    /**
-     * Method called to check if route matches
-     *
-     * @param string $url
-     * @param Request $request
-     * @return bool
-     */
-    public function matchRoute(string $url, Request $request): bool
-    {
-        if ($this->getGroup() !== null && $this->getGroup()->matchRoute($url, $request) === false) {
-            return false;
-        }
-
-        if ($this->prefix !== null) {
-            /* Parse parameters from current route */
-            $parameters = $this->parseParameters($this->prefix, $url);
-
-            /* If no custom regular expression or parameters was found on this route, we stop */
-            if ($parameters === null) {
-                return false;
-            }
-
-            /* Set the parameters */
-            $this->setParameters($parameters);
-        }
-
-        return $this->matchDomain($request);
-    }
-
 }
\ No newline at end of file
diff --git a/src/Pecee/SimpleRouter/Route/RouteResource.php b/src/Pecee/SimpleRouter/Route/RouteResource.php
index 73ea662..ceeb18c 100644
--- a/src/Pecee/SimpleRouter/Route/RouteResource.php
+++ b/src/Pecee/SimpleRouter/Route/RouteResource.php
@@ -120,7 +120,7 @@ class RouteResource extends LoadableRoute implements IControllerRoute
         }
 
         // Update
-        if ($id !== null && \in_array($method, [Request::REQUEST_TYPE_PATCH, Request::REQUEST_TYPE_PUT], true) === true) {
+        if ($id !== null && in_array($method, [Request::REQUEST_TYPE_PATCH, Request::REQUEST_TYPE_PUT], true) === true) {
             return $this->call($this->methodNames['update']);
         }
 
diff --git a/src/Pecee/SimpleRouter/Router.php b/src/Pecee/SimpleRouter/Router.php
index 91b7b67..72dd297 100644
--- a/src/Pecee/SimpleRouter/Router.php
+++ b/src/Pecee/SimpleRouter/Router.php
@@ -2,6 +2,7 @@
 
 namespace Pecee\SimpleRouter;
 
+use Exception;
 use Pecee\Exceptions\InvalidArgumentException;
 use Pecee\Http\Exceptions\MalformedUrlException;
 use Pecee\Http\Middleware\BaseCsrfVerifier;
@@ -188,7 +189,7 @@ class Router
         $route->renderRoute($this->request, $this);
         $this->isProcessingRoute = false;
 
-        if (\count($this->routeStack) !== 0) {
+        if (count($this->routeStack) !== 0) {
 
             /* Pop and grab the routes added when executing group callback earlier */
             $stack = $this->routeStack;
@@ -225,7 +226,7 @@ class Router
         /* @var $route IRoute */
         foreach ($routes as $route) {
 
-            $this->debug('Processing route "%s"', \get_class($route));
+            $this->debug('Processing route "%s"', get_class($route));
 
             if ($group !== null) {
                 /* Add the parent group */
@@ -238,7 +239,7 @@ class Router
                 if ($route->matchRoute($url, $this->request) === true) {
 
                     /* Add exception handlers */
-                    if (\count($route->getExceptionHandlers()) !== 0) {
+                    if (count($route->getExceptionHandlers()) !== 0) {
                         /** @noinspection AdditionOperationOnArraysInspection */
                         $exceptionHandlers += $route->getExceptionHandlers();
                     }
@@ -292,7 +293,7 @@ class Router
         /* @var $manager IRouterBootManager */
         foreach ($this->bootManagers as $manager) {
 
-            $className = \get_class($manager);
+            $className = get_class($manager);
             $this->debug('Rendering bootmanager "%s"', $className);
             $this->fireEvents(EventHandler::EVENT_RENDER_BOOTMANAGER, [
                 'bootmanagers' => $this->bootManagers,
@@ -315,7 +316,7 @@ class Router
      * @throws NotFoundHttpException
      * @throws \Pecee\Http\Middleware\Exceptions\TokenMismatchException
      * @throws HttpException
-     * @throws \Exception
+     * @throws Exception
      */
     public function start(): ?string
     {
@@ -351,7 +352,7 @@ class Router
      *
      * @return string|null
      * @throws HttpException
-     * @throws \Exception
+     * @throws Exception
      */
     public function routeRequest(): ?string
     {
@@ -365,7 +366,7 @@ class Router
             /* @var $route ILoadableRoute */
             foreach ($this->processedRoutes as $key => $route) {
 
-                $this->debug('Matching route "%s"', \get_class($route));
+                $this->debug('Matching route "%s"', get_class($route));
 
                 /* If the route matches */
                 if ($route->matchRoute($url, $this->request) === true) {
@@ -375,7 +376,7 @@ class Router
                     ]);
 
                     /* Check if request method matches */
-                    if (\count($route->getRequestMethods()) !== 0 && \in_array($this->request->getMethod(), $route->getRequestMethods(), true) === false) {
+                    if (count($route->getRequestMethods()) !== 0 && in_array($this->request->getMethod(), $route->getRequestMethods(), true) === false) {
                         $this->debug('Method "%s" not allowed', $this->request->getMethod());
 
                         // Only set method not allowed is not already set
@@ -425,7 +426,7 @@ class Router
                 }
             }
 
-        } catch (\Exception $e) {
+        } catch (Exception $e) {
             $this->handleException($e);
         }
 
@@ -434,7 +435,7 @@ class Router
             $this->handleException(new NotFoundHttpException($message, 403));
         }
 
-        if (\count($this->request->getLoadedRoutes()) === 0) {
+        if (count($this->request->getLoadedRoutes()) === 0) {
 
             $rewriteUrl = $this->request->getRewriteUrl();
 
@@ -459,7 +460,7 @@ class Router
      * @param string $url
      * @return string|null
      * @throws HttpException
-     * @throws \Exception
+     * @throws Exception
      */
     protected function handleRouteRewrite(string $key, string $url): ?string
     {
@@ -493,14 +494,14 @@ class Router
     }
 
     /**
-     * @param \Exception $e
+     * @param Exception $e
      * @return string|null
-     * @throws \Exception
+     * @throws Exception
      * @throws HttpException
      */
-    protected function handleException(\Exception $e): ?string
+    protected function handleException(Exception $e): ?string
     {
-        $this->debug('Starting exception handling for "%s"', \get_class($e));
+        $this->debug('Starting exception handling for "%s"', get_class($e));
 
         $this->fireEvents(EventHandler::EVENT_LOAD_EXCEPTIONS, [
             'exception'         => $e,
@@ -510,7 +511,7 @@ class Router
         /* @var $handler IExceptionHandler */
         foreach ($this->exceptionHandlers as $key => $handler) {
 
-            if (\is_object($handler) === false) {
+            if (is_object($handler) === false) {
                 $handler = new $handler();
             }
 
@@ -520,7 +521,7 @@ class Router
                 'exceptionHandlers' => $this->exceptionHandlers,
             ]);
 
-            $this->debug('Processing exception-handler "%s"', \get_class($handler));
+            $this->debug('Processing exception-handler "%s"', get_class($handler));
 
             if (($handler instanceof IExceptionHandler) === false) {
                 throw new HttpException('Exception handler must implement the IExceptionHandler interface.', 500);
@@ -549,7 +550,7 @@ class Router
                     return $this->routeRequest();
                 }
 
-            } catch (\Exception $e) {
+            } catch (Exception $e) {
 
             }
 
@@ -592,7 +593,7 @@ class Router
             }
 
             /* Using @ is most definitely a controller@method or alias@method */
-            if (\is_string($name) === true && strpos($name, '@') !== false) {
+            if (is_string($name) === true && strpos($name, '@') !== false) {
                 [$controller, $method] = array_map('strtolower', explode('@', $name));
 
                 if ($controller === strtolower($route->getClass()) && $method === strtolower($route->getMethod())) {
@@ -604,7 +605,7 @@ class Router
 
             /* Check if callback matches (if it's not a function) */
             $callback = $route->getCallback();
-            if (\is_string($name) === true && \is_string($callback) === true && \is_callable($callback) === false && strpos($name, '@') !== false && strpos($callback, '@') !== false) {
+            if (is_string($name) === true && is_string($callback) === true && is_callable($callback) === false && strpos($name, '@') !== false && strpos($callback, '@') !== false) {
 
                 /* Check if the entire callback is matching */
                 if (strpos($callback, $name) === 0 || strtolower($callback) === strtolower($name)) {
@@ -647,7 +648,7 @@ class Router
      */
     public function getUrl(?string $name = null, $parameters = null, ?array $getParams = null): Url
     {
-        $this->debug('Finding url', \func_get_args());
+        $this->debug('Finding url', func_get_args());
 
         $this->fireEvents(EventHandler::EVENT_GET_URL, [
             'name'       => $name,
@@ -655,7 +656,7 @@ class Router
             'getParams'  => $getParams,
         ]);
 
-        if ($getParams !== null && \is_array($getParams) === false) {
+        if ($getParams !== null && is_array($getParams) === false) {
             throw new InvalidArgumentException('Invalid type for getParams. Must be array or null');
         }
 
@@ -696,7 +697,7 @@ class Router
         }
 
         /* Using @ is most definitely a controller@method or alias@method */
-        if (\is_string($name) === true && strpos($name, '@') !== false) {
+        if (is_string($name) === true && strpos($name, '@') !== false) {
             [$controller, $method] = explode('@', $name);
 
             /* Loop through all the routes to see if we can find a match */
@@ -876,7 +877,7 @@ class Router
      */
     protected function fireEvents(string $name, array $arguments = []): void
     {
-        if (\count($this->eventHandlers) === 0) {
+        if (count($this->eventHandlers) === 0) {
             return;
         }
 
diff --git a/src/Pecee/SimpleRouter/SimpleRouter.php b/src/Pecee/SimpleRouter/SimpleRouter.php
index 408a8d2..74b3a79 100644
--- a/src/Pecee/SimpleRouter/SimpleRouter.php
+++ b/src/Pecee/SimpleRouter/SimpleRouter.php
@@ -10,6 +10,8 @@
 
 namespace Pecee\SimpleRouter;
 
+use Closure;
+use Exception;
 use Pecee\Exceptions\InvalidArgumentException;
 use Pecee\Http\Middleware\BaseCsrfVerifier;
 use Pecee\Http\Request;
@@ -54,7 +56,7 @@ class SimpleRouter
      * @throws \Pecee\SimpleRouter\Exceptions\NotFoundHttpException
      * @throws \Pecee\Http\Middleware\Exceptions\TokenMismatchException
      * @throws HttpException
-     * @throws \Exception
+     * @throws Exception
      */
     public static function start(): void
     {
@@ -79,18 +81,18 @@ class SimpleRouter
             ob_start();
             static::router()->setDebugEnabled(true)->start();
             $routerOutput = ob_get_clean();
-        } catch (\Exception $e) {
+        } catch (Exception $e) {
 
         }
 
         // Try to parse library version
-        $composerFile = \dirname(__DIR__, 3) . '/composer.lock';
+        $composerFile = dirname(__DIR__, 3) . '/composer.lock';
         $version = false;
 
         if (is_file($composerFile) === true) {
             $composerInfo = json_decode(file_get_contents($composerFile), true);
 
-            if (isset($composerInfo['packages']) === true && \is_array($composerInfo['packages']) === true) {
+            if (isset($composerInfo['packages']) === true && is_array($composerInfo['packages']) === true) {
                 foreach ($composerInfo['packages'] as $package) {
                     if (isset($package['name']) === true && strtolower($package['name']) === 'pecee/simple-router') {
                         $version = $package['version'];
@@ -180,7 +182,7 @@ class SimpleRouter
      * Route the given url to your callback on GET request method.
      *
      * @param string $url
-     * @param string|array|\Closure $callback
+     * @param string|array|Closure $callback
      * @param array|null $settings
      *
      * @return RouteUrl
@@ -194,7 +196,7 @@ class SimpleRouter
      * Route the given url to your callback on POST request method.
      *
      * @param string $url
-     * @param string|array|\Closure $callback
+     * @param string|array|Closure $callback
      * @param array|null $settings
      * @return RouteUrl
      */
@@ -207,7 +209,7 @@ class SimpleRouter
      * Route the given url to your callback on PUT request method.
      *
      * @param string $url
-     * @param string|array|\Closure $callback
+     * @param string|array|Closure $callback
      * @param array|null $settings
      * @return RouteUrl
      */
@@ -220,7 +222,7 @@ class SimpleRouter
      * Route the given url to your callback on PATCH request method.
      *
      * @param string $url
-     * @param string|array|\Closure $callback
+     * @param string|array|Closure $callback
      * @param array|null $settings
      * @return RouteUrl
      */
@@ -233,7 +235,7 @@ class SimpleRouter
      * Route the given url to your callback on OPTIONS request method.
      *
      * @param string $url
-     * @param string|array|\Closure $callback
+     * @param string|array|Closure $callback
      * @param array|null $settings
      * @return RouteUrl
      */
@@ -246,7 +248,7 @@ class SimpleRouter
      * Route the given url to your callback on DELETE request method.
      *
      * @param string $url
-     * @param string|array|\Closure $callback
+     * @param string|array|Closure $callback
      * @param array|null $settings
      * @return RouteUrl
      */
@@ -259,13 +261,13 @@ class SimpleRouter
      * Groups allows for encapsulating routes with special settings.
      *
      * @param array $settings
-     * @param \Closure $callback
+     * @param Closure $callback
      * @return RouteGroup
      * @throws InvalidArgumentException
      */
-    public static function group(array $settings, \Closure $callback): IGroupRoute
+    public static function group(array $settings, Closure $callback): IGroupRoute
     {
-        if (\is_callable($callback) === false) {
+        if (is_callable($callback) === false) {
             throw new InvalidArgumentException('Invalid callback provided. Only functions or methods supported');
         }
 
@@ -283,14 +285,14 @@ class SimpleRouter
      * parameters and which are only rendered when the url matches.
      *
      * @param string $url
-     * @param \Closure $callback
+     * @param Closure $callback
      * @param array $settings
      * @return RoutePartialGroup
      * @throws InvalidArgumentException
      */
-    public static function partialGroup(string $url, \Closure $callback, array $settings = []): IPartialGroupRoute
+    public static function partialGroup(string $url, Closure $callback, array $settings = []): IPartialGroupRoute
     {
-        if (\is_callable($callback) === false) {
+        if (is_callable($callback) === false) {
             throw new InvalidArgumentException('Invalid callback provided. Only functions or methods supported');
         }
 
@@ -309,7 +311,7 @@ class SimpleRouter
      * Alias for the form method
      *
      * @param string $url
-     * @param string|array|\Closure $callback
+     * @param string|array|Closure $callback
      * @param array|null $settings
      * @return RouteUrl
      * @see SimpleRouter::form
@@ -324,7 +326,7 @@ class SimpleRouter
      * Route the given url to your callback on POST and GET request method.
      *
      * @param string $url
-     * @param string|array|\Closure $callback
+     * @param string|array|Closure $callback
      * @param array|null $settings
      * @return RouteUrl
      * @see SimpleRouter::form
@@ -342,7 +344,7 @@ class SimpleRouter
      *
      * @param array $requestMethods
      * @param string $url
-     * @param string|array|\Closure $callback
+     * @param string|array|Closure $callback
      * @param array|null $settings
      * @return RouteUrl|IRoute
      */
@@ -362,7 +364,7 @@ class SimpleRouter
      * This type will route the given url to your callback and allow any type of request method
      *
      * @param string $url
-     * @param string|array|\Closure $callback
+     * @param string|array|Closure $callback
      * @param array|null $settings
      * @return RouteUrl|IRoute
      */
@@ -418,10 +420,10 @@ class SimpleRouter
     /**
      * Add exception callback handler.
      *
-     * @param \Closure $callback
+     * @param Closure $callback
      * @return CallbackExceptionHandler $callbackHandler
      */
-    public static function error(\Closure $callback): CallbackExceptionHandler
+    public static function error(Closure $callback): CallbackExceptionHandler
     {
         $routes = static::router()->getRoutes();
 
@@ -458,7 +460,7 @@ class SimpleRouter
     {
         try {
             return static::router()->getUrl($name, $parameters, $getParams);
-        } catch (\Exception $e) {
+        } catch (Exception $e) {
             return new Url('/');
         }
     }
diff --git a/tests/Pecee/SimpleRouter/Dummy/ClassLoader/CustomClassLoader.php b/tests/Pecee/SimpleRouter/Dummy/ClassLoader/CustomClassLoader.php
index 17bff54..ee5ebe6 100644
--- a/tests/Pecee/SimpleRouter/Dummy/ClassLoader/CustomClassLoader.php
+++ b/tests/Pecee/SimpleRouter/Dummy/ClassLoader/CustomClassLoader.php
@@ -7,8 +7,20 @@ class CustomClassLoader implements \Pecee\SimpleRouter\ClassLoader\IClassLoader
         return new DummyController();
     }
 
+    /**
+     * Called when loading class method
+     * @param object $class
+     * @param string $method
+     * @param array $parameters
+     * @return object
+     */
+    public function loadClassMethod($class, string $method, array $parameters)
+    {
+        return call_user_func_array([$class, $method], ['result' => true]);
+    }
+
     public function loadClosure(callable $closure, array $parameters)
     {
-        return \call_user_func_array($closure, ['result' => true]);
+        return call_user_func_array($closure, ['result' => true]);
     }
 }
\ No newline at end of file
diff --git a/tests/Pecee/SimpleRouter/InputHandlerTest.php b/tests/Pecee/SimpleRouter/InputHandlerTest.php
index 11dcf28..be50698 100644
--- a/tests/Pecee/SimpleRouter/InputHandlerTest.php
+++ b/tests/Pecee/SimpleRouter/InputHandlerTest.php
@@ -122,7 +122,20 @@ class InputHandlerTest extends \PHPUnit\Framework\TestCase
         $_GET = [];
     }
 
+    public function testFindInput() {
 
+        global $_POST;
+        $_POST['hello'] = 'motto';
+
+        $router = TestRouter::router();
+        $router->reset();
+        $router->getRequest()->setMethod('post');
+        $inputHandler = TestRouter::request()->getInputHandler();
+
+        $value = $inputHandler->value('hello', null, \Pecee\Http\Request::$requestTypesPost);
+
+        $this->assertEquals($_POST['hello'], $value);
+    }
 
     public function testFile()
     {
diff --git a/tests/Pecee/SimpleRouter/RouterPartialGroupTest.php b/tests/Pecee/SimpleRouter/RouterPartialGroupTest.php
index 40e288a..df78d9f 100644
--- a/tests/Pecee/SimpleRouter/RouterPartialGroupTest.php
+++ b/tests/Pecee/SimpleRouter/RouterPartialGroupTest.php
@@ -70,4 +70,47 @@ class RouterPartialGroupTest extends \PHPUnit\Framework\TestCase
 
     }
 
+    public function testPhp8CallUserFunc() {
+
+        TestRouter::router()->reset();
+
+        $result = false;
+        $lang = 'de';
+
+        TestRouter::group(['prefix' => '/lang'], function() use(&$result) {
+            TestRouter::get('/{lang}', function ($lang) use(&$result) {
+                $result = $lang;
+            });
+        });
+
+        TestRouter::debug("/lang/$lang");
+
+        $this->assertEquals($lang, $result);
+
+        // Test partial group
+
+        $lang = 'de';
+        $userId = 22;
+
+        $result1 = false;
+        $result2 = false;
+
+        TestRouter::partialGroup(
+            '/lang/{lang}/',
+            function ($lang) use(&$result1, &$result2) {
+
+                $result1 = $lang;
+
+                TestRouter::get('/user/{userId}', function ($userId) use(&$result2) {
+                    $result2 = $userId;
+                });
+            });
+
+        TestRouter::debug("/lang/$lang/user/$userId");
+
+        $this->assertEquals($lang, $result1);
+        $this->assertEquals($userId, $result2);
+
+    }
+
 }
\ No newline at end of file
diff --git a/tests/Pecee/SimpleRouter/RouterUrlTest.php b/tests/Pecee/SimpleRouter/RouterUrlTest.php
index f9b0d4b..7e619a6 100644
--- a/tests/Pecee/SimpleRouter/RouterUrlTest.php
+++ b/tests/Pecee/SimpleRouter/RouterUrlTest.php
@@ -271,4 +271,81 @@ class RouterUrlTest extends \PHPUnit\Framework\TestCase
         TestRouter::router()->reset();
     }
 
+    public function testGroupPrefix() {
+
+        $result = false;
+
+        TestRouter::group(['prefix' => '/lang/{lang}'], function () use(&$result) {
+
+            TestRouter::get('/test', function() use(&$result) {
+                $result = true;
+            });
+        });
+
+        TestRouter::debug('/lang/da/test');
+
+        $this->assertTrue($result);
+
+        // Test group prefix sub-route
+
+        $result = null;
+        $expectedResult = 28;
+
+        TestRouter::group(['prefix' => '/lang/{lang}'], function () use(&$result) {
+
+            TestRouter::get('/horse/{horseType}', function($horseType) use(&$result) {
+                $result = false;
+            });
+
+            TestRouter::get('/user/{userId}', function($userId) use(&$result) {
+                $result = $userId;
+            });
+        });
+
+        TestRouter::debug("/lang/da/user/$expectedResult");
+
+        $this->assertEquals($expectedResult, $result);
+
+    }
+
+    public function testPassParameter() {
+
+        $result = false;
+        $expectedLanguage = 'da';
+
+        TestRouter::group(['prefix' => '/lang/{lang}'], function ($language) use(&$result) {
+
+            TestRouter::get('/test', function($language) use(&$result) {
+                $result = $language;
+            });
+
+        });
+
+        TestRouter::debug("/lang/$expectedLanguage/test");
+
+        $this->assertEquals($expectedLanguage, $result);
+
+    }
+
+    public function testPassParameterDeep() {
+
+        $result = false;
+        $expectedLanguage = 'da';
+
+        TestRouter::group(['prefix' => '/lang/{lang}'], function ($language) use(&$result) {
+
+            TestRouter::group(['prefix' => '/admin'], function($language) use(&$result) {
+                TestRouter::get('/test', function($language) use(&$result) {
+                    $result = $language;
+                });
+            });
+
+        });
+
+        TestRouter::debug("/lang/$expectedLanguage/admin/test");
+
+        $this->assertEquals($expectedLanguage, $result);
+
+    }
+
 }
\ No newline at end of file