diff --git a/src/DebugBar/Bridge/CacheCacheCollector.php b/src/DebugBar/Bridge/CacheCacheCollector.php
index 3d841c6..7e7f46f 100644
--- a/src/DebugBar/Bridge/CacheCacheCollector.php
+++ b/src/DebugBar/Bridge/CacheCacheCollector.php
@@ -31,6 +31,13 @@ class CacheCacheCollector extends MonologCollector
 {
     protected $logger;
 
+    /**
+     * CacheCacheCollector constructor.
+     * @param Cache|null $cache
+     * @param Logger|null $logger
+     * @param bool $level
+     * @param bool $bubble
+     */
     public function __construct(Cache $cache = null, Logger $logger = null, $level = Logger::DEBUG, $bubble = true)
     {
         parent::__construct(null, $level, $bubble);
@@ -45,6 +52,9 @@ class CacheCacheCollector extends MonologCollector
         }
     }
 
+    /**
+     * @param Cache $cache
+     */
     public function addCache(Cache $cache)
     {
         $backend = $cache->getBackend();
@@ -55,6 +65,9 @@ class CacheCacheCollector extends MonologCollector
         $this->addLogger($backend->getLogger());
     }
 
+    /**
+     * @return string
+     */
     public function getName()
     {
         return 'cache';
diff --git a/src/DebugBar/Bridge/DoctrineCollector.php b/src/DebugBar/Bridge/DoctrineCollector.php
index 6fa358e..7c91da9 100644
--- a/src/DebugBar/Bridge/DoctrineCollector.php
+++ b/src/DebugBar/Bridge/DoctrineCollector.php
@@ -34,6 +34,11 @@ class DoctrineCollector extends DataCollector implements Renderable, AssetProvid
 {
     protected $debugStack;
 
+    /**
+     * DoctrineCollector constructor.
+     * @param $debugStackOrEntityManager
+     * @throws DebugBarException
+     */
     public function __construct($debugStackOrEntityManager)
     {
         if ($debugStackOrEntityManager instanceof EntityManager) {
@@ -45,6 +50,9 @@ class DoctrineCollector extends DataCollector implements Renderable, AssetProvid
         $this->debugStack = $debugStackOrEntityManager;
     }
 
+    /**
+     * @return array
+     */
     public function collect()
     {
         $queries = array();
@@ -67,11 +75,17 @@ class DoctrineCollector extends DataCollector implements Renderable, AssetProvid
         );
     }
 
+    /**
+     * @return string
+     */
     public function getName()
     {
         return 'doctrine';
     }
 
+    /**
+     * @return array
+     */
     public function getWidgets()
     {
         return array(
@@ -88,6 +102,9 @@ class DoctrineCollector extends DataCollector implements Renderable, AssetProvid
         );
     }
 
+    /**
+     * @return array
+     */
     public function getAssets()
     {
         return array(
diff --git a/src/DebugBar/Bridge/MonologCollector.php b/src/DebugBar/Bridge/MonologCollector.php
index 609d5c5..f24b296 100644
--- a/src/DebugBar/Bridge/MonologCollector.php
+++ b/src/DebugBar/Bridge/MonologCollector.php
@@ -56,6 +56,9 @@ class MonologCollector extends AbstractProcessingHandler implements DataCollecto
         $logger->pushHandler($this);
     }
 
+    /**
+     * @param array $record
+     */
     protected function write(array $record)
     {
         $this->records[] = array(
@@ -66,11 +69,17 @@ class MonologCollector extends AbstractProcessingHandler implements DataCollecto
         );
     }
 
+    /**
+     * @return array
+     */
     public function getMessages()
     {
         return $this->records;
     }
 
+    /**
+     * @return array
+     */
     public function collect()
     {
         return array(
@@ -79,11 +88,17 @@ class MonologCollector extends AbstractProcessingHandler implements DataCollecto
         );
     }
 
+    /**
+     * @return string
+     */
     public function getName()
     {
         return $this->name;
     }
 
+    /**
+     * @return array
+     */
     public function getWidgets()
     {
         $name = $this->getName();
diff --git a/src/DebugBar/DataCollector/AggregatedCollector.php b/src/DebugBar/DataCollector/AggregatedCollector.php
index 6c8e711..c1fd96a 100644
--- a/src/DebugBar/DataCollector/AggregatedCollector.php
+++ b/src/DebugBar/DataCollector/AggregatedCollector.php
@@ -100,6 +100,9 @@ class AggregatedCollector implements DataCollectorInterface, ArrayAccess
         return $this->sort;
     }
 
+    /**
+     * @return array
+     */
     public function collect()
     {
         $aggregate = array();
@@ -136,6 +139,9 @@ class AggregatedCollector implements DataCollectorInterface, ArrayAccess
         return $data;
     }
 
+    /**
+     * @return string
+     */
     public function getName()
     {
         return $this->name;
@@ -144,21 +150,38 @@ class AggregatedCollector implements DataCollectorInterface, ArrayAccess
     // --------------------------------------------
     // ArrayAccess implementation
 
+    /**
+     * @param mixed $key
+     * @param mixed $value
+     * @throws DebugBarException
+     */
     public function offsetSet($key, $value)
     {
         throw new DebugBarException("AggregatedCollector[] is read-only");
     }
 
+    /**
+     * @param mixed $key
+     * @return mixed
+     */
     public function offsetGet($key)
     {
         return $this->collectors[$key];
     }
 
+    /**
+     * @param mixed $key
+     * @return bool
+     */
     public function offsetExists($key)
     {
         return isset($this->collectors[$key]);
     }
 
+    /**
+     * @param mixed $key
+     * @throws DebugBarException
+     */
     public function offsetUnset($key)
     {
         throw new DebugBarException("AggregatedCollector[] is read-only");
diff --git a/src/DebugBar/DataCollector/ConfigCollector.php b/src/DebugBar/DataCollector/ConfigCollector.php
index 7b4ac90..692b547 100644
--- a/src/DebugBar/DataCollector/ConfigCollector.php
+++ b/src/DebugBar/DataCollector/ConfigCollector.php
@@ -39,6 +39,9 @@ class ConfigCollector extends DataCollector implements Renderable
         $this->data = $data;
     }
 
+    /**
+     * @return array
+     */
     public function collect()
     {
         $data = array();
@@ -51,11 +54,17 @@ class ConfigCollector extends DataCollector implements Renderable
         return $data;
     }
 
+    /**
+     * @return string
+     */
     public function getName()
     {
         return $this->name;
     }
 
+    /**
+     * @return array
+     */
     public function getWidgets()
     {
         $name = $this->getName();
diff --git a/src/DebugBar/DataCollector/DataCollector.php b/src/DebugBar/DataCollector/DataCollector.php
index 081f66e..aae5cba 100644
--- a/src/DebugBar/DataCollector/DataCollector.php
+++ b/src/DebugBar/DataCollector/DataCollector.php
@@ -49,6 +49,7 @@ abstract class DataCollector implements DataCollectorInterface
      * Sets the data formater instance used by this collector
      *
      * @param DataFormatterInterface $formater
+     * @return $this
      */
     public function setDataFormatter(DataFormatterInterface $formater)
     {
@@ -56,6 +57,9 @@ abstract class DataCollector implements DataCollectorInterface
         return $this;
     }
 
+    /**
+     * @return DataFormatterInterface
+     */
     public function getDataFormatter()
     {
         if ($this->dataFormater === null) {
diff --git a/src/DebugBar/DataCollector/ExceptionsCollector.php b/src/DebugBar/DataCollector/ExceptionsCollector.php
index 8bf08d4..9959a30 100644
--- a/src/DebugBar/DataCollector/ExceptionsCollector.php
+++ b/src/DebugBar/DataCollector/ExceptionsCollector.php
@@ -88,11 +88,17 @@ class ExceptionsCollector extends DataCollector implements Renderable
         );
     }
 
+    /**
+     * @return string
+     */
     public function getName()
     {
         return 'exceptions';
     }
 
+    /**
+     * @return array
+     */
     public function getWidgets()
     {
         return array(
diff --git a/src/DebugBar/DataCollector/LocalizationCollector.php b/src/DebugBar/DataCollector/LocalizationCollector.php
index 98b9e63..276cd0e 100644
--- a/src/DebugBar/DataCollector/LocalizationCollector.php
+++ b/src/DebugBar/DataCollector/LocalizationCollector.php
@@ -35,6 +35,9 @@ class LocalizationCollector extends DataCollector implements Renderable
         return textdomain();
     }
 
+    /**
+     * @return array
+     */
     public function collect()
     {
         return array(
@@ -43,11 +46,17 @@ class LocalizationCollector extends DataCollector implements Renderable
         );
     }
 
+    /**
+     * @return string
+     */
     public function getName()
     {
         return 'localization';
     }
 
+    /**
+     * @return array
+     */
     public function getWidgets()
     {
         return array(
diff --git a/src/DebugBar/DataCollector/MemoryCollector.php b/src/DebugBar/DataCollector/MemoryCollector.php
index 1a27c40..462c616 100644
--- a/src/DebugBar/DataCollector/MemoryCollector.php
+++ b/src/DebugBar/DataCollector/MemoryCollector.php
@@ -35,6 +35,9 @@ class MemoryCollector extends DataCollector implements Renderable
         $this->peakUsage = memory_get_peak_usage(true);
     }
 
+    /**
+     * @return array
+     */
     public function collect()
     {
         $this->updatePeakUsage();
@@ -44,11 +47,17 @@ class MemoryCollector extends DataCollector implements Renderable
         );
     }
 
+    /**
+     * @return string
+     */
     public function getName()
     {
         return 'memory';
     }
 
+    /**
+     * @return array
+     */
     public function getWidgets()
     {
         return array(
diff --git a/src/DebugBar/DataCollector/MessagesCollector.php b/src/DebugBar/DataCollector/MessagesCollector.php
index dc88cf7..b980629 100644
--- a/src/DebugBar/DataCollector/MessagesCollector.php
+++ b/src/DebugBar/DataCollector/MessagesCollector.php
@@ -38,6 +38,7 @@ class MessagesCollector extends AbstractLogger implements DataCollectorInterface
      * Sets the data formater instance used by this collector
      *
      * @param DataFormatterInterface $formater
+     * @return $this
      */
     public function setDataFormatter(DataFormatterInterface $formater)
     {
@@ -45,6 +46,9 @@ class MessagesCollector extends AbstractLogger implements DataCollectorInterface
         return $this;
     }
 
+    /**
+     * @return DataFormatterInterface
+     */
     public function getDataFormatter()
     {
         if ($this->dataFormater === null) {
@@ -85,6 +89,9 @@ class MessagesCollector extends AbstractLogger implements DataCollectorInterface
         $this->aggregates[] = $messages;
     }
 
+    /**
+     * @return array
+     */
     public function getMessages()
     {
         $messages = $this->messages;
@@ -107,6 +114,11 @@ class MessagesCollector extends AbstractLogger implements DataCollectorInterface
         return $messages;
     }
 
+    /**
+     * @param $level
+     * @param $message
+     * @param array $context
+     */
     public function log($level, $message, array $context = array())
     {
         $this->addMessage($message, $level);
@@ -120,6 +132,9 @@ class MessagesCollector extends AbstractLogger implements DataCollectorInterface
         $this->messages = array();
     }
 
+    /**
+     * @return array
+     */
     public function collect()
     {
         $messages = $this->getMessages();
@@ -129,11 +144,17 @@ class MessagesCollector extends AbstractLogger implements DataCollectorInterface
         );
     }
 
+    /**
+     * @return string
+     */
     public function getName()
     {
         return $this->name;
     }
 
+    /**
+     * @return array
+     */
     public function getWidgets()
     {
         $name = $this->getName();
diff --git a/src/DebugBar/DataCollector/PDO/PDOCollector.php b/src/DebugBar/DataCollector/PDO/PDOCollector.php
index 37e7b02..e9952ed 100644
--- a/src/DebugBar/DataCollector/PDO/PDOCollector.php
+++ b/src/DebugBar/DataCollector/PDO/PDOCollector.php
@@ -43,11 +43,17 @@ class PDOCollector extends DataCollector implements Renderable, AssetProvider
         $this->sqlQuotationChar = $quotationChar;
     }
 
+    /**
+     * @return bool
+     */
     public function isSqlRenderedWithParams()
     {
         return $this->renderSqlWithParams;
     }
 
+    /**
+     * @return string
+     */
     public function getSqlQuotationChar()
     {
         return $this->sqlQuotationChar;
@@ -77,6 +83,9 @@ class PDOCollector extends DataCollector implements Renderable, AssetProvider
         return $this->connections;
     }
 
+    /**
+     * @return array
+     */
     public function collect()
     {
         $data = array(
@@ -151,11 +160,17 @@ class PDOCollector extends DataCollector implements Renderable, AssetProvider
         );
     }
 
+    /**
+     * @return string
+     */
     public function getName()
     {
         return 'pdo';
     }
 
+    /**
+     * @return array
+     */
     public function getWidgets()
     {
         return array(
@@ -172,6 +187,9 @@ class PDOCollector extends DataCollector implements Renderable, AssetProvider
         );
     }
 
+    /**
+     * @return array
+     */
     public function getAssets()
     {
         return array(
diff --git a/src/DebugBar/DataCollector/PDO/TraceablePDO.php b/src/DebugBar/DataCollector/PDO/TraceablePDO.php
index 5f7688b..fcee4c4 100644
--- a/src/DebugBar/DataCollector/PDO/TraceablePDO.php
+++ b/src/DebugBar/DataCollector/PDO/TraceablePDO.php
@@ -179,16 +179,29 @@ class TraceablePDO extends PDO
         return array_filter($this->executedStatements, function ($s) { return !$s->isSuccess(); });
     }
 
+    /**
+     * @param $name
+     * @return mixed
+     */
     public function __get($name)
     {
         return $this->pdo->$name;
     }
 
+    /**
+     * @param $name
+     * @param $value
+     */
     public function __set($name, $value)
     {
         $this->pdo->$name = $value;
     }
 
+    /**
+     * @param $name
+     * @param $args
+     * @return mixed
+     */
     public function __call($name, $args)
     {
         return call_user_func_array(array($this->pdo, $name), $args);
diff --git a/src/DebugBar/DataCollector/PDO/TraceablePDOStatement.php b/src/DebugBar/DataCollector/PDO/TraceablePDOStatement.php
index 4eb75fd..31623d1 100644
--- a/src/DebugBar/DataCollector/PDO/TraceablePDOStatement.php
+++ b/src/DebugBar/DataCollector/PDO/TraceablePDOStatement.php
@@ -15,11 +15,23 @@ class TraceablePDOStatement extends PDOStatement
 
     protected $boundParameters = array();
 
+    /**
+     * TraceablePDOStatement constructor.
+     * @param TraceablePDO $pdo
+     */
     protected function __construct(TraceablePDO $pdo)
     {
         $this->pdo = $pdo;
     }
 
+    /**
+     * @param mixed $column
+     * @param mixed $param
+     * @param null $type
+     * @param null $maxlen
+     * @param null $driverdata
+     * @return mixed
+     */
     public function bindColumn($column, &$param, $type = null, $maxlen = null, $driverdata = null)
     {
         $this->boundParameters[$column] = $param;
@@ -27,6 +39,14 @@ class TraceablePDOStatement extends PDOStatement
         return call_user_func_array(array("parent", 'bindColumn'), $args);
     }
 
+    /**
+     * @param mixed $param
+     * @param mixed $var
+     * @param int $data_type
+     * @param null $length
+     * @param null $driver_options
+     * @return mixed
+     */
     public function bindParam($param, &$var, $data_type = PDO::PARAM_STR, $length = null, $driver_options = null)
     {
         $this->boundParameters[$param] = $var;
@@ -34,12 +54,23 @@ class TraceablePDOStatement extends PDOStatement
         return call_user_func_array(array("parent", 'bindParam'), $args);
     }
 
+    /**
+     * @param mixed $param
+     * @param mixed $value
+     * @param int $data_type
+     * @return mixed
+     */
     public function bindValue($param, $value, $data_type = PDO::PARAM_STR)
     {
         $this->boundParameters[$param] = $value;
         return call_user_func_array(array("parent", 'bindValue'), func_get_args());
     }
 
+    /**
+     * @param null $params
+     * @return bool
+     * @throws null
+     */
     public function execute($params = null)
     {
         $preparedId = spl_object_hash($this);
diff --git a/src/DebugBar/DataCollector/PDO/TracedStatement.php b/src/DebugBar/DataCollector/PDO/TracedStatement.php
index ae58a07..1ccc583 100644
--- a/src/DebugBar/DataCollector/PDO/TracedStatement.php
+++ b/src/DebugBar/DataCollector/PDO/TracedStatement.php
@@ -31,11 +31,6 @@ class TracedStatement
      * @param string $sql
      * @param array $params
      * @param string $preparedId
-     * @param integer $rowCount
-     * @param integer $startTime
-     * @param integer $endTime
-     * @param integer $memoryUsage
-     * @param \Exception $e
      */
     public function __construct($sql, array $params = array(), $preparedId = null)
     {
@@ -44,12 +39,22 @@ class TracedStatement
         $this->preparedId = $preparedId;
     }
 
+    /**
+     * @param null $startTime
+     * @param null $startMemory
+     */
     public function start($startTime = null, $startMemory = null)
     {
         $this->startTime = $startTime ?: microtime(true);
         $this->startMemory = $startMemory ?: memory_get_usage(true);
     }
 
+    /**
+     * @param \Exception|null $exception
+     * @param int $rowCount
+     * @param null $endTime
+     * @param null $endMemory
+     */
     public function end(\Exception $exception = null, $rowCount = 0, $endTime = null, $endMemory = null)
     {
         $this->endTime = $endTime ?: microtime(true);
@@ -158,11 +163,17 @@ class TracedStatement
         return $this->preparedId !== null;
     }
 
+    /**
+     * @return mixed
+     */
     public function getStartTime()
     {
         return $this->startTime;
     }
 
+    /**
+     * @return mixed
+     */
     public function getEndTime()
     {
         return $this->endTime;
@@ -178,11 +189,17 @@ class TracedStatement
         return $this->duration;
     }
 
+    /**
+     * @return mixed
+     */
     public function getStartMemory()
     {
         return $this->startMemory;
     }
 
+    /**
+     * @return mixed
+     */
     public function getEndMemory()
     {
         return $this->endMemory;
diff --git a/src/DebugBar/DataCollector/PhpInfoCollector.php b/src/DebugBar/DataCollector/PhpInfoCollector.php
index 9e97316..8901947 100644
--- a/src/DebugBar/DataCollector/PhpInfoCollector.php
+++ b/src/DebugBar/DataCollector/PhpInfoCollector.php
@@ -15,6 +15,9 @@ namespace DebugBar\DataCollector;
  */
 class PhpInfoCollector extends DataCollector
 {
+    /**
+     * @return array
+     */
     public function collect()
     {
         return array(
@@ -23,6 +26,9 @@ class PhpInfoCollector extends DataCollector
         );
     }
 
+    /**
+     * @return string
+     */
     public function getName()
     {
         return 'php';
diff --git a/src/DebugBar/DataCollector/RequestDataCollector.php b/src/DebugBar/DataCollector/RequestDataCollector.php
index 1b8de32..6306e48 100644
--- a/src/DebugBar/DataCollector/RequestDataCollector.php
+++ b/src/DebugBar/DataCollector/RequestDataCollector.php
@@ -15,6 +15,9 @@ namespace DebugBar\DataCollector;
  */
 class RequestDataCollector extends DataCollector implements Renderable
 {
+    /**
+     * @return array
+     */
     public function collect()
     {
         $vars = array('_GET', '_POST', '_SESSION', '_COOKIE', '_SERVER');
@@ -29,11 +32,17 @@ class RequestDataCollector extends DataCollector implements Renderable
         return $data;
     }
 
+    /**
+     * @return string
+     */
     public function getName()
     {
         return 'request';
     }
 
+    /**
+     * @return array
+     */
     public function getWidgets()
     {
         return array(
diff --git a/src/DebugBar/DataCollector/TimeDataCollector.php b/src/DebugBar/DataCollector/TimeDataCollector.php
index 19e5a63..5bbed41 100644
--- a/src/DebugBar/DataCollector/TimeDataCollector.php
+++ b/src/DebugBar/DataCollector/TimeDataCollector.php
@@ -187,6 +187,10 @@ class TimeDataCollector extends DataCollector implements Renderable
         return microtime(true) - $this->requestStartTime;
     }
 
+    /**
+     * @return array
+     * @throws DebugBarException
+     */
     public function collect()
     {
         $this->requestEndTime = microtime(true);
@@ -203,11 +207,17 @@ class TimeDataCollector extends DataCollector implements Renderable
         );
     }
 
+    /**
+     * @return string
+     */
     public function getName()
     {
         return 'time';
     }
 
+    /**
+     * @return array
+     */
     public function getWidgets()
     {
         return array(
diff --git a/src/DebugBar/DataFormatter/DataFormatter.php b/src/DebugBar/DataFormatter/DataFormatter.php
index 41e2775..27f4e9a 100644
--- a/src/DebugBar/DataFormatter/DataFormatter.php
+++ b/src/DebugBar/DataFormatter/DataFormatter.php
@@ -15,12 +15,19 @@ use Symfony\Component\VarDumper\Dumper\CliDumper;
 
 class DataFormatter implements DataFormatterInterface
 {
+    /**
+     * DataFormatter constructor.
+     */
     public function __construct()
     {
         $this->cloner = new VarCloner();
         $this->dumper = new CliDumper();
     }
 
+    /**
+     * @param $data
+     * @return string
+     */
     public function formatVar($data)
     {
         $output = '';
@@ -39,6 +46,10 @@ class DataFormatter implements DataFormatterInterface
         return trim($output);
     }
 
+    /**
+     * @param float $seconds
+     * @return string
+     */
     public function formatDuration($seconds)
     {
         if ($seconds < 0.001) {
@@ -49,6 +60,11 @@ class DataFormatter implements DataFormatterInterface
         return round($seconds, 2) . 's';
     }
 
+    /**
+     * @param string $size
+     * @param int $precision
+     * @return string
+     */
     public function formatBytes($size, $precision = 2)
     {
         if ($size === 0 || $size === null) {
diff --git a/src/DebugBar/DebugBar.php b/src/DebugBar/DebugBar.php
index 6b11437..d771d2a 100644
--- a/src/DebugBar/DebugBar.php
+++ b/src/DebugBar/DebugBar.php
@@ -84,6 +84,7 @@ class DebugBar implements ArrayAccess
      *
      * @param string $name
      * @return DataCollectorInterface
+     * @throws DebugBarException
      */
     public function getCollector($name)
     {
@@ -107,6 +108,7 @@ class DebugBar implements ArrayAccess
      * Sets the request id generator
      *
      * @param RequestIdGeneratorInterface $generator
+     * @return $this
      */
     public function setRequestIdGenerator(RequestIdGeneratorInterface $generator)
     {
@@ -142,6 +144,7 @@ class DebugBar implements ArrayAccess
      * Sets the storage backend to use to store the collected data
      *
      * @param StorageInterface $storage
+     * @return $this
      */
     public function setStorage(StorageInterface $storage = null)
     {
@@ -171,6 +174,7 @@ class DebugBar implements ArrayAccess
      * Sets the HTTP driver
      *
      * @param HttpDriverInterface $driver
+     * @return $this
      */
     public function setHttpDriver(HttpDriverInterface $driver)
     {
@@ -287,6 +291,7 @@ class DebugBar implements ArrayAccess
      * @param bool $useOpenHandler
      * @param string $headerName
      * @param integer $maxHeaderLength
+     * @return $this
      */
     public function sendDataInHeaders($useOpenHandler = null, $headerName = 'phpdebugbar', $maxHeaderLength = 4096)
     {
@@ -369,6 +374,7 @@ class DebugBar implements ArrayAccess
      * Sets the key to use in the $_SESSION array
      *
      * @param string $ns
+     * @return $this
      */
     public function setStackDataSessionNamespace($ns)
     {
@@ -391,6 +397,7 @@ class DebugBar implements ArrayAccess
      * if a storage is enabled
      *
      * @param boolean $enabled
+     * @return $this
      */
     public function setStackAlwaysUseSessionStorage($enabled = true)
     {
@@ -411,8 +418,8 @@ class DebugBar implements ArrayAccess
 
     /**
      * Initializes the session for stacked data
-     *
      * @return HttpDriverInterface
+     * @throws DebugBarException
      */
     protected function initStackSession()
     {
@@ -430,9 +437,8 @@ class DebugBar implements ArrayAccess
 
     /**
      * Returns a JavascriptRenderer for this instance
-     *
      * @param string $baseUrl
-     * @param string $basePathng
+     * @param string $basePath
      * @return JavascriptRenderer
      */
     public function getJavascriptRenderer($baseUrl = null, $basePath = null)
diff --git a/src/DebugBar/HttpDriverInterface.php b/src/DebugBar/HttpDriverInterface.php
index f91b139..1a7a3cf 100644
--- a/src/DebugBar/HttpDriverInterface.php
+++ b/src/DebugBar/HttpDriverInterface.php
@@ -19,7 +19,8 @@ interface HttpDriverInterface
     /**
      * Sets HTTP headers
      *
-     * @param string $headers
+     * @param array $headers
+     * @return
      */
     function setHeaders(array $headers);
 
diff --git a/src/DebugBar/JavascriptRenderer.php b/src/DebugBar/JavascriptRenderer.php
index d4ac750..5575cae 100644
--- a/src/DebugBar/JavascriptRenderer.php
+++ b/src/DebugBar/JavascriptRenderer.php
@@ -764,6 +764,8 @@ class JavascriptRenderer
      *
      * @param boolean $here Set position of HTML. True if is to current position or false for end file
      * @param boolean $initialize Whether to render the de bug bar initialization code
+     * @param bool $renderStackedData
+     * @param bool $head
      * @return string Return "{--DEBUGBAR_OB_START_REPLACE_ME--}" or return an empty string if $here == false
      */
     public function renderOnShutdown($here = true, $initialize = true, $renderStackedData = true, $head = false)
@@ -795,6 +797,8 @@ class JavascriptRenderer
      *
      * @param boolean $here Set position of HTML. True if is to current position or false for end file
      * @param boolean $initialize Whether to render the de bug bar initialization code
+     * @param bool $renderStackedData
+     * @param bool $head
      */
     public function replaceTagInBuffer($here = true, $initialize = true, $renderStackedData = true, $head = false)
     {
@@ -815,7 +819,8 @@ class JavascriptRenderer
      *
      * AJAX request should not render the initialization code.
      *
-     * @param boolean $initialize Whether to render the de bug bar initialization code
+     * @param boolean $initialize Whether or not to render the debug bar initialization code
+     * @param bool $renderStackedData Whether or not to render the stacked data
      * @return string
      */
     public function render($initialize = true, $renderStackedData = true)
@@ -945,6 +950,7 @@ class JavascriptRenderer
      *
      * @param string $requestId
      * @param array $data
+     * @param null $suffix
      * @return string
      */
     protected function getAddDatasetCode($requestId, $data, $suffix = null)
diff --git a/src/DebugBar/OpenHandler.php b/src/DebugBar/OpenHandler.php
index cbabea2..ee4df41 100644
--- a/src/DebugBar/OpenHandler.php
+++ b/src/DebugBar/OpenHandler.php
@@ -19,6 +19,7 @@ class OpenHandler
 
     /**
      * @param DebugBar $debugBar
+     * @throws DebugBarException
      */
     public function __construct(DebugBar $debugBar)
     {
@@ -32,6 +33,10 @@ class OpenHandler
      * Handles the current request
      *
      * @param array $request Request data
+     * @param bool $echo
+     * @param bool $sendHeader
+     * @return string
+     * @throws DebugBarException
      */
     public function handle($request = null, $echo = true, $sendHeader = true)
     {
@@ -62,6 +67,8 @@ class OpenHandler
 
     /**
      * Find operation
+     * @param $request
+     * @return array
      */
     protected function find($request)
     {
@@ -87,6 +94,9 @@ class OpenHandler
 
     /**
      * Get operation
+     * @param $request
+     * @return array
+     * @throws DebugBarException
      */
     protected function get($request)
     {
diff --git a/src/DebugBar/PhpHttpDriver.php b/src/DebugBar/PhpHttpDriver.php
index af07060..36e56f8 100644
--- a/src/DebugBar/PhpHttpDriver.php
+++ b/src/DebugBar/PhpHttpDriver.php
@@ -15,6 +15,9 @@ namespace DebugBar;
  */
 class PhpHttpDriver implements HttpDriverInterface
 {
+    /**
+     * @param array $headers
+     */
     function setHeaders(array $headers)
     {
         foreach ($headers as $name => $value) {
@@ -22,26 +25,44 @@ class PhpHttpDriver implements HttpDriverInterface
         }
     }
 
+    /**
+     * @return bool
+     */
     function isSessionStarted()
     {
         return isset($_SESSION);
     }
 
+    /**
+     * @param string $name
+     * @param string $value
+     */
     function setSessionValue($name, $value)
     {
         $_SESSION[$name] = $value;
     }
 
+    /**
+     * @param string $name
+     * @return bool
+     */
     function hasSessionValue($name)
     {
         return array_key_exists($name, $_SESSION);
     }
 
+    /**
+     * @param string $name
+     * @return mixed
+     */
     function getSessionValue($name)
     {
         return $_SESSION[$name];
     }
 
+    /**
+     * @param string $name
+     */
     function deleteSessionValue($name)
     {
         unset($_SESSION[$name]);
diff --git a/src/DebugBar/RequestIdGenerator.php b/src/DebugBar/RequestIdGenerator.php
index 934f407..21b3c0c 100644
--- a/src/DebugBar/RequestIdGenerator.php
+++ b/src/DebugBar/RequestIdGenerator.php
@@ -15,6 +15,9 @@ namespace DebugBar;
  */
 class RequestIdGenerator implements RequestIdGeneratorInterface
 {
+    /**
+     * @return string
+     */
     public function generate()
     {
         return md5(serialize($_SERVER) . microtime());