diff --git a/framework/base/Application.php b/framework/base/Application.php
index 10c24c8233..f6bbe53e2b 100644
--- a/framework/base/Application.php
+++ b/framework/base/Application.php
@@ -363,7 +363,6 @@ abstract class Application extends Module
      * Sets the root directory of the application and the @app alias.
      * This method can only be invoked at the beginning of the constructor.
      * @param string $path the root directory of the application.
-     * @property string the root directory of the application.
      * @throws InvalidArgumentException if the directory does not exist.
      */
     public function setBasePath($path)
diff --git a/framework/console/controllers/FixtureController.php b/framework/console/controllers/FixtureController.php
index caba5d271c..32275c9f0e 100644
--- a/framework/console/controllers/FixtureController.php
+++ b/framework/console/controllers/FixtureController.php
@@ -236,7 +236,6 @@ class FixtureController extends Controller
 
     /**
      * Show help message.
-     * @param array $fixturesInput
      */
     private function printHelpMessage()
     {
diff --git a/framework/db/cubrid/QueryBuilder.php b/framework/db/cubrid/QueryBuilder.php
index 72ac4df6ef..be1802d93b 100644
--- a/framework/db/cubrid/QueryBuilder.php
+++ b/framework/db/cubrid/QueryBuilder.php
@@ -9,7 +9,6 @@ namespace yii\db\cubrid;
 
 use yii\base\InvalidArgumentException;
 use yii\base\NotSupportedException;
-use yii\db\Constraint;
 use yii\db\Exception;
 use yii\db\Expression;
 
@@ -65,7 +64,6 @@ class QueryBuilder extends \yii\db\QueryBuilder
      */
     public function upsert($table, $insertColumns, $updateColumns, &$params)
     {
-        /** @var Constraint[] $constraints */
         list($uniqueNames, $insertNames, $updateNames) = $this->prepareUpsertColumns($table, $insertColumns, $updateColumns, $constraints);
         if (empty($uniqueNames)) {
             return $this->insert($table, $insertColumns, $params);
diff --git a/framework/db/mssql/QueryBuilder.php b/framework/db/mssql/QueryBuilder.php
index e14d3653c4..14eaff4828 100644
--- a/framework/db/mssql/QueryBuilder.php
+++ b/framework/db/mssql/QueryBuilder.php
@@ -9,7 +9,6 @@ namespace yii\db\mssql;
 
 use yii\base\InvalidArgumentException;
 use yii\base\NotSupportedException;
-use yii\db\Constraint;
 use yii\db\Expression;
 use yii\db\Query;
 use yii\db\TableSchema;
@@ -544,7 +543,6 @@ class QueryBuilder extends \yii\db\QueryBuilder
     {
         $insertColumns = $this->normalizeTableRowData($table, $insertColumns, $params);
 
-        /** @var Constraint[] $constraints */
         list($uniqueNames, $insertNames, $updateNames) = $this->prepareUpsertColumns($table, $insertColumns, $updateColumns, $constraints);
         if (empty($uniqueNames)) {
             return $this->insert($table, $insertColumns, $params);
diff --git a/framework/db/oci/QueryBuilder.php b/framework/db/oci/QueryBuilder.php
index 7f63a5bbcb..56b01dded0 100644
--- a/framework/db/oci/QueryBuilder.php
+++ b/framework/db/oci/QueryBuilder.php
@@ -9,7 +9,6 @@ namespace yii\db\oci;
 
 use yii\base\InvalidArgumentException;
 use yii\db\Connection;
-use yii\db\Constraint;
 use yii\db\Exception;
 use yii\db\Expression;
 use yii\db\Query;
@@ -213,7 +212,6 @@ EOD;
      */
     public function upsert($table, $insertColumns, $updateColumns, &$params)
     {
-        /** @var Constraint[] $constraints */
         list($uniqueNames, $insertNames, $updateNames) = $this->prepareUpsertColumns($table, $insertColumns, $updateColumns, $constraints);
         if (empty($uniqueNames)) {
             return $this->insert($table, $insertColumns, $params);
diff --git a/framework/db/pgsql/QueryBuilder.php b/framework/db/pgsql/QueryBuilder.php
index 48e9ea8671..ada018c209 100644
--- a/framework/db/pgsql/QueryBuilder.php
+++ b/framework/db/pgsql/QueryBuilder.php
@@ -8,7 +8,6 @@
 namespace yii\db\pgsql;
 
 use yii\base\InvalidArgumentException;
-use yii\db\Constraint;
 use yii\db\Expression;
 use yii\db\ExpressionInterface;
 use yii\db\Query;
@@ -368,7 +367,6 @@ class QueryBuilder extends \yii\db\QueryBuilder
      */
     private function oldUpsert($table, $insertColumns, $updateColumns, &$params)
     {
-        /** @var Constraint[] $constraints */
         list($uniqueNames, $insertNames, $updateNames) = $this->prepareUpsertColumns($table, $insertColumns, $updateColumns, $constraints);
         if (empty($uniqueNames)) {
             return $this->insert($table, $insertColumns, $params);
diff --git a/framework/db/sqlite/QueryBuilder.php b/framework/db/sqlite/QueryBuilder.php
index 18abffa8eb..1e2ee03aed 100644
--- a/framework/db/sqlite/QueryBuilder.php
+++ b/framework/db/sqlite/QueryBuilder.php
@@ -10,7 +10,6 @@ namespace yii\db\sqlite;
 use yii\base\InvalidArgumentException;
 use yii\base\NotSupportedException;
 use yii\db\Connection;
-use yii\db\Constraint;
 use yii\db\Expression;
 use yii\db\ExpressionInterface;
 use yii\db\Query;
@@ -69,7 +68,6 @@ class QueryBuilder extends \yii\db\QueryBuilder
      */
     public function upsert($table, $insertColumns, $updateColumns, &$params)
     {
-        /** @var Constraint[] $constraints */
         list($uniqueNames, $insertNames, $updateNames) = $this->prepareUpsertColumns($table, $insertColumns, $updateColumns, $constraints);
         if (empty($uniqueNames)) {
             return $this->insert($table, $insertColumns, $params);
diff --git a/framework/helpers/BaseMarkdown.php b/framework/helpers/BaseMarkdown.php
index df7e38c78a..2e46482c56 100644
--- a/framework/helpers/BaseMarkdown.php
+++ b/framework/helpers/BaseMarkdown.php
@@ -95,7 +95,6 @@ class BaseMarkdown
         if ($flavor === null) {
             $flavor = static::$defaultFlavor;
         }
-        /** @var \cebe\markdown\Markdown $parser */
         if (!isset(static::$flavors[$flavor])) {
             throw new InvalidArgumentException("Markdown flavor '$flavor' is not defined.'");
         } elseif (!is_object($config = static::$flavors[$flavor])) {