diff --git a/src/BeSimple/SoapCommon/Helper.php b/src/BeSimple/SoapCommon/Helper.php
index 19185ed..c33a9df 100644
--- a/src/BeSimple/SoapCommon/Helper.php
+++ b/src/BeSimple/SoapCommon/Helper.php
@@ -191,6 +191,7 @@ class Helper
      * Get SOAP namespace for the given $version.
      *
      * @param int $version SOAP_1_1|SOAP_1_2
+     *
      * @return string
      */
     public static function getSoapNamespace($version)
@@ -206,6 +207,7 @@ class Helper
      * Get SOAP version from namespace URI.
      *
      * @param string $namespace NS_SOAP_1_1|NS_SOAP_1_2
+     *
      * @return int SOAP_1_1|SOAP_1_2
      */
     public static function getSoapVersionFromNamespace($namespace)
diff --git a/src/BeSimple/SoapCommon/Mime/MultiPart.php b/src/BeSimple/SoapCommon/Mime/MultiPart.php
index 1a3b7e1..1b8ffa3 100644
--- a/src/BeSimple/SoapCommon/Mime/MultiPart.php
+++ b/src/BeSimple/SoapCommon/Mime/MultiPart.php
@@ -46,6 +46,7 @@ class MultiPart extends PartHeader
      * Construct new mime object.
      *
      * @param string $boundary Boundary string
+     *
      * @return void
      */
     public function __construct($boundary = null)
@@ -64,6 +65,7 @@ class MultiPart extends PartHeader
      * Get mime message of this object (without headers).
      *
      * @param boolean $withHeaders Returned mime message contains headers
+     *
      * @return string
      */
     public function getMimeMessage($withHeaders = false)
@@ -106,6 +108,7 @@ class MultiPart extends PartHeader
      *
      * @param \BeSimple\SoapCommon\Mime\Part $part   Part that is added
      * @param boolean                        $isMain Is the given part the main part of mime message
+     *
      * @return void
      */
     public function addPart(Part $part, $isMain = false)
@@ -124,6 +127,7 @@ class MultiPart extends PartHeader
      * parameter.
      *
      * @param string $contentId Content id of desired part
+     *
      * @return \BeSimple\SoapCommon\Mime\Part|null
      */
     public function getPart($contentId = null)
@@ -141,6 +145,7 @@ class MultiPart extends PartHeader
      * Get all parts.
      *
      * @param boolean $includeMainPart Should main part be in result set
+     *
      * @return array(\BeSimple\SoapCommon\Mime\Part)
      */
     public function getParts($includeMainPart = false)
diff --git a/src/BeSimple/SoapCommon/Mime/Parser.php b/src/BeSimple/SoapCommon/Mime/Parser.php
index ab41b97..1c5fe5f 100644
--- a/src/BeSimple/SoapCommon/Mime/Parser.php
+++ b/src/BeSimple/SoapCommon/Mime/Parser.php
@@ -24,6 +24,7 @@ class Parser
      *
      * @param string                $mimeMessage Mime message string
      * @param array(string=>string) $headers     Array of header elements (e.g. coming from http request)
+     *
      * @return \BeSimple\SoapCommon\Mime\MultiPart
      */
     public static function parseMimeMessage($mimeMessage, array $headers = array())
@@ -133,6 +134,7 @@ class Parser
      * @param \BeSimple\SoapCommon\Mime\PartHeader $part        Header part
      * @param string                               $headerName  Header name
      * @param string                               $headerValue Header value
+     *
      * @return null
      */
     private static function parseContentTypeHeader(PartHeader $part, $headerName, $headerValue)
@@ -165,6 +167,7 @@ class Parser
      *
      * @param \BeSimple\SoapCommon\Mime\Part $part    Part to add content
      * @param string                         $content Content to decode
+     *
      * @return null
      */
     private static function decodeContent(Part $part, $content)
diff --git a/src/BeSimple/SoapCommon/Mime/Part.php b/src/BeSimple/SoapCommon/Mime/Part.php
index 88a2ca7..48aa438 100644
--- a/src/BeSimple/SoapCommon/Mime/Part.php
+++ b/src/BeSimple/SoapCommon/Mime/Part.php
@@ -68,6 +68,7 @@ class Part extends PartHeader
      * @param string $charset     Charset
      * @param string $encoding    Encoding
      * @param string $contentId   Content id
+     *
      * @return void
      */
     public function __construct($content = null, $contentType = 'application/octet-stream', $charset = null, $encoding = self::ENCODING_BINARY, $contentId = null)
@@ -76,7 +77,7 @@ class Part extends PartHeader
         $this->setHeader('Content-Type', $contentType);
         if (!is_null($charset)) {
             $this->setHeader('Content-Type', 'charset', $charset);
-        } else { // if (substr($contentType, 0, 4) == 'text') {
+        } else {
             $this->setHeader('Content-Type', 'charset', 'utf-8');
         }
         $this->setHeader('Content-Transfer-Encoding', $encoding);
@@ -110,6 +111,7 @@ class Part extends PartHeader
      * Set mime content.
      *
      * @param mixed $content Content to set
+     *
      * @return void
      */
     public function setContent($content)
diff --git a/src/BeSimple/SoapCommon/Mime/PartHeader.php b/src/BeSimple/SoapCommon/Mime/PartHeader.php
index 8e78bea..ff0dcfc 100644
--- a/src/BeSimple/SoapCommon/Mime/PartHeader.php
+++ b/src/BeSimple/SoapCommon/Mime/PartHeader.php
@@ -32,6 +32,7 @@ abstract class PartHeader
      * @param string $name     Header name
      * @param string $value    Header value
      * @param string $subValue Is sub value?
+     *
      * @return void
      */
     public function setHeader($name, $value, $subValue = null)
@@ -57,6 +58,7 @@ abstract class PartHeader
      *
      * @param string $name     Header name
      * @param string $subValue Sub value name
+     *
      * @return mixed|array(mixed)
      */
     public function getHeader($name, $subValue = null)
@@ -104,6 +106,7 @@ abstract class PartHeader
      * Generates a header field value from the given value paramater.
      *
      * @param array(string=>string)|string $value Header value
+     *
      * @return string
      */
     protected function generateHeaderFieldValue($value)
@@ -129,6 +132,7 @@ abstract class PartHeader
      * "(" / ")" / "<" / ">" / "@" / "," / ";" / ":" / "\" / <"> / "/" / "[" / "]" / "?" / "="
      *
      * @param string $string String to quote
+     *
      * @return string
      */
     private function quoteValueString($string)
diff --git a/src/BeSimple/SoapCommon/SoapKernel.php b/src/BeSimple/SoapCommon/SoapKernel.php
index 5a8f650..fc349c8 100644
--- a/src/BeSimple/SoapCommon/SoapKernel.php
+++ b/src/BeSimple/SoapCommon/SoapKernel.php
@@ -21,61 +21,68 @@ use BeSimple\SoapCommon\SoapResponseFilter;
 
 /**
  * SoapKernel provides methods to pre- and post-process SoapRequests and SoapResponses using
- * chains of SoapRequestFilter and SoapResponseFilter objects (roughly following 
+ * chains of SoapRequestFilter and SoapResponseFilter objects (roughly following
  * the chain-of-responsibility pattern).
- * 
+ *
  * @author Christian Kerl <christian-kerl@web.de>
  */
 class SoapKernel
 {
-    private $requestFilters = array();
-    private $responseFilters = array();
-    
     /**
-     * Registers the given object either as filter for SoapRequests or as filter for SoapResponses 
+     * Request filters.
+     *
+     * @var array(SoapRequestFilter)
+     */
+    private $requestFilters = array();
+
+    /**
+     * Response filters.
+     *
+     * @var array(SoapResponseFilter)
+     */
+    private $responseFilters = array();
+
+    /**
+     * Registers the given object either as filter for SoapRequests or as filter for SoapResponses
      * or as filter for both depending on the implemented interfaces. Inner filters have to be registered
-     * before outer filters. This means the order is as follows: RequestFilter2->RequestFilter1 and 
+     * before outer filters. This means the order is as follows: RequestFilter2->RequestFilter1 and
      * ResponseFilter1->ResponseFilter2.
-     * 
+     *
      * TODO: add priority mechanism to ensure correct order of filters
-     * 
-     * @param SoapRequestFilter|SoapResponseFilter $filter
+     *
+     * @param SoapRequestFilter|SoapResponseFilter $filter Filter to register
      */
     public function registerFilter($filter)
-    {   
-        if($filter instanceof SoapRequestFilter)
-        {
+    {
+        if ($filter instanceof SoapRequestFilter) {
             array_unshift($this->requestFilters, $filter);
         }
-        
-        if($filter instanceof SoapResponseFilter)
-        {
+
+        if ($filter instanceof SoapResponseFilter) {
             array_push($this->responseFilters, $filter);
         }
     }
-    
+
     /**
-     * Applies all registered SoapRequestFilter to the given SoapRequest. 
-     * 
-     * @param SoapRequest $request
+     * Applies all registered SoapRequestFilter to the given SoapRequest.
+     *
+     * @param SoapRequest $request Soap request
      */
     public function filterRequest(SoapRequest $request)
     {
-        foreach($this->requestFilters as $filter)
-        {
+        foreach ($this->requestFilters as $filter) {
             $filter->filterRequest($request);
         }
     }
-    
+
     /**
-     * Applies all registered SoapResponseFilter to the given SoapResponse. 
-     * 
-     * @param SoapResponse $response
+     * Applies all registered SoapResponseFilter to the given SoapResponse.
+     *
+     * @param SoapResponse $response SOAP response
      */
     public function filterResponse(SoapResponse $response)
     {
-        foreach($this->responseFilters as $filter)
-        {
+        foreach ($this->responseFilters as $filter) {
             $filter->filterResponse($response);
         }
     }
diff --git a/src/BeSimple/SoapCommon/SoapMessage.php b/src/BeSimple/SoapCommon/SoapMessage.php
index 4c256c0..e92baf5 100644
--- a/src/BeSimple/SoapCommon/SoapMessage.php
+++ b/src/BeSimple/SoapCommon/SoapMessage.php
@@ -91,6 +91,8 @@ abstract class SoapMessage
     * Get content type for given SOAP version.
     *
     * @param string $version SOAP version constant SOAP_1_1|SOAP_1_2
+    *
+    * @return string
     * @throws \InvalidArgumentException
     */
     public static function getContentTypeForVersion($version)
@@ -115,7 +117,7 @@ abstract class SoapMessage
     /**
      * Set SOAP action.
      *
-     * @param string $action
+     * @param string $action SOAP action
      */
     public function setAction($action)
     {
@@ -138,7 +140,7 @@ abstract class SoapMessage
     /**
      * Set message content (MIME Message or SOAP Envelope).
      *
-     * @param string $content
+     * @param string $content SOAP message
      */
     public function setContent($content)
     {
@@ -176,7 +178,7 @@ abstract class SoapMessage
     /**
      * Set content type.
      *
-     * @param string $contentType
+     * @param string $contentType Content type header
      */
     public function setContentType($contentType)
     {
@@ -196,7 +198,7 @@ abstract class SoapMessage
     /**
      * Set location.
      *
-     * @param string $location
+     * @param string $location Location string
      */
     public function setLocation($location)
     {
@@ -216,7 +218,7 @@ abstract class SoapMessage
     /**
      * Set version.
      *
-     * @param string $version
+     * @param string $version SOAP version SOAP_1_1|SOAP_1_2
      */
     public function setVersion($version)
     {
diff --git a/src/BeSimple/SoapCommon/SoapRequest.php b/src/BeSimple/SoapCommon/SoapRequest.php
index 24120c4..314d157 100644
--- a/src/BeSimple/SoapCommon/SoapRequest.php
+++ b/src/BeSimple/SoapCommon/SoapRequest.php
@@ -16,9 +16,11 @@ namespace BeSimple\SoapCommon;
 use BeSimple\SoapCommon\SoapMessage;
 
 /**
+ * SOAP request message.
+ *
  * @author Christian Kerl <christian-kerl@web.de>
  */
 class SoapRequest extends SoapMessage
 {
-    
+
 }
\ No newline at end of file
diff --git a/src/BeSimple/SoapCommon/SoapRequestFilter.php b/src/BeSimple/SoapCommon/SoapRequestFilter.php
index 8b200ee..dbc990c 100644
--- a/src/BeSimple/SoapCommon/SoapRequestFilter.php
+++ b/src/BeSimple/SoapCommon/SoapRequestFilter.php
@@ -16,9 +16,16 @@ namespace BeSimple\SoapCommon;
 use BeSimple\SoapCommon\SoapRequest;
 
 /**
+ * SOAP request filter interface.
+ *
  * @author Christian Kerl <christian-kerl@web.de>
  */
 interface SoapRequestFilter
 {
+    /**
+     * Modify SOAP response.
+     *
+     * @param SoapRequest $request SOAP request
+     */
     public function filterRequest(SoapRequest $request);
 }
\ No newline at end of file
diff --git a/src/BeSimple/SoapCommon/SoapResponse.php b/src/BeSimple/SoapCommon/SoapResponse.php
index 7141917..b6815b2 100644
--- a/src/BeSimple/SoapCommon/SoapResponse.php
+++ b/src/BeSimple/SoapCommon/SoapResponse.php
@@ -16,9 +16,11 @@ namespace BeSimple\SoapCommon;
 use BeSimple\SoapCommon\SoapMessage;
 
 /**
+ * SOAP response message.
+ *
  * @author Christian Kerl <christian-kerl@web.de>
  */
 class SoapResponse extends SoapMessage
 {
-    
+
 }
\ No newline at end of file
diff --git a/src/BeSimple/SoapCommon/SoapResponseFilter.php b/src/BeSimple/SoapCommon/SoapResponseFilter.php
index ebc4c50..c7d6bb6 100644
--- a/src/BeSimple/SoapCommon/SoapResponseFilter.php
+++ b/src/BeSimple/SoapCommon/SoapResponseFilter.php
@@ -16,9 +16,16 @@ namespace BeSimple\SoapCommon;
 use BeSimple\SoapCommon\SoapResponse;
 
 /**
+ * SOAP response filter interface.
+ *
  * @author Christian Kerl <christian-kerl@web.de>
  */
 interface SoapResponseFilter
 {
+    /**
+     * Modify SOAP response.
+     *
+     * @param SoapResponse $response SOAP response
+     */
     public function filterResponse(SoapResponse $response);
 }
\ No newline at end of file
diff --git a/src/BeSimple/SoapCommon/WsSecurityKey.php b/src/BeSimple/SoapCommon/WsSecurityKey.php
index 327b521..432e654 100644
--- a/src/BeSimple/SoapCommon/WsSecurityKey.php
+++ b/src/BeSimple/SoapCommon/WsSecurityKey.php
@@ -42,6 +42,7 @@ class WsSecurityKey
      * @param string  $key            Private key
      * @param boolean $keyIsFile      Given key parameter is path to key file
      * @param string  $passphrase     Passphrase for key
+     *
      * @return void
      */
     public function addPrivateKey($encryptionType, $key = null, $keyIsFile = true, $passphrase = null)
@@ -55,6 +56,7 @@ class WsSecurityKey
      * @param string  $encryptionType Encryption type
      * @param string  $key            Public key
      * @param boolean $keyIsFile      Given key parameter is path to key file
+     *
      * @return void
      */
     public function addPublicKey($encryptionType, $key = null, $keyIsFile = true)
diff --git a/src/BeSimple/SoapCommon/WsdlHandler.php b/src/BeSimple/SoapCommon/WsdlHandler.php
index f0f533e..6fd044b 100644
--- a/src/BeSimple/SoapCommon/WsdlHandler.php
+++ b/src/BeSimple/SoapCommon/WsdlHandler.php
@@ -87,6 +87,7 @@ class WsdlHandler
      * Gets the mime type information from the WSDL file.
      *
      * @param string $soapAction Soap action to analyse
+     *
      * @return array(string=>array(string=>array(string)))
      */
     private function getMimeTypesForSoapAction($soapAction)
@@ -152,6 +153,7 @@ class WsdlHandler
      * @param string $operationType   Operation type
      * @param string $part            Part name
      * @param string $currentMimeType Current mime type
+     *
      * @return boolean
      */
     public function isValidMimeTypeType($soapAction, $operationType, $part, $currentMimeType)