diff --git a/extensions/apidoc/templates/BaseRenderer.php b/extensions/apidoc/templates/BaseRenderer.php
index 3bd3b98..a8baab8 100644
--- a/extensions/apidoc/templates/BaseRenderer.php
+++ b/extensions/apidoc/templates/BaseRenderer.php
@@ -50,7 +50,6 @@ abstract class BaseRenderer extends Component
 	 * @param array $files list of markdown files to render
 	 * @param Context $context the api documentation context to render.
 	 * @param Controller $controller the apidoc controller instance. Can be used to control output.
-	 * @return
 	 */
 	public abstract function renderMarkdownFiles($controller);
 
diff --git a/extensions/apidoc/templates/html/views/constSummary.php b/extensions/apidoc/templates/html/views/constSummary.php
index 1054181..b9e200e 100644
--- a/extensions/apidoc/templates/html/views/constSummary.php
+++ b/extensions/apidoc/templates/html/views/constSummary.php
@@ -33,7 +33,7 @@ ArrayHelper::multisort($constants, 'name');
 	<tr<?= $constant->definedBy != $type->name ? ' class="inherited"' : '' ?> id="<?= $constant->name ?>">
 	  <td><?= $constant->name ?><a name="<?= $constant->name ?>-detail"></a></td>
 	  <td><?= $constant->value ?></td>
-	  <td><?= APiMarkdown::process($constant->shortDescription . "\n" . $constant->description, $constant->definedBy, true) ?></td>
+	  <td><?= ApiMarkdown::process($constant->shortDescription . "\n" . $constant->description, $constant->definedBy, true) ?></td>
 	  <td><?= $this->context->typeLink($constant->definedBy) ?></td>
 	</tr>
 <?php endforeach; ?>
diff --git a/extensions/bootstrap/Tabs.php b/extensions/bootstrap/Tabs.php
index 2192746..29505f0 100644
--- a/extensions/bootstrap/Tabs.php
+++ b/extensions/bootstrap/Tabs.php
@@ -92,7 +92,7 @@ class Tabs extends Widget
 	 */
 	public $encodeLabels = true;
 	/**
-	 * @var string, specifies the Bootstrap tab styling.
+	 * @var string specifies the Bootstrap tab styling.
 	 */
 	public $navType = 'nav-tabs';
 
diff --git a/extensions/redis/LuaScriptBuilder.php b/extensions/redis/LuaScriptBuilder.php
index 3da5d3d..1c1082b 100644
--- a/extensions/redis/LuaScriptBuilder.php
+++ b/extensions/redis/LuaScriptBuilder.php
@@ -7,6 +7,7 @@
 
 namespace yii\redis;
 
+use yii\base\InvalidParamException;
 use yii\base\NotSupportedException;
 use yii\db\Exception;
 use yii\db\Expression;
diff --git a/extensions/sphinx/QueryBuilder.php b/extensions/sphinx/QueryBuilder.php
index e24a3a8..8e1d5c4 100644
--- a/extensions/sphinx/QueryBuilder.php
+++ b/extensions/sphinx/QueryBuilder.php
@@ -77,7 +77,7 @@ class QueryBuilder extends Object
 
 		$clauses = [
 			$this->buildSelect($query->select, $params, $query->distinct, $query->selectOption),
-			$this->buildFrom($from, $Params),
+			$this->buildFrom($from, $params),
 			$this->buildWhere($query->from, $query->where, $params),
 			$this->buildGroupBy($query->groupBy),
 			$this->buildWithin($query->within),