Maybe better formatting?

apps/advanced/frontend/widgets/Alert.php

@@ -39,30 +39,30 @@ class Alert extends \yii\bootstrap\Widget
 	 */
 	public $closeButton = [];
 
-    public function init()
-    {
-        parent::init();
+	public function init()
+	{
+		parent::init();
 
-        $session = \Yii::$app->getSession();
-        $flashes = $session->getAllFlashes();
-        $appendCss = isset($this->options['class']) ? ' ' . $this->options['class'] : '';
+		$session = \Yii::$app->getSession();
+		$flashes = $session->getAllFlashes();
+		$appendCss = isset($this->options['class']) ? ' ' . $this->options['class'] : '';
 
-        foreach ($flashes as $type => $message) {
-            if (isset($this->alertTypes[$type])) {
-                /* initialize css class for each alert box */
-                $this->options['class'] = $this->alertTypes[$type] . $appendCss;
+		foreach ($flashes as $type => $message) {
+			if (isset($this->alertTypes[$type])) {
+				/* initialize css class for each alert box */
+				$this->options['class'] = $this->alertTypes[$type] . $appendCss;
 
-                /* assign unique id to each alert box */
-                $this->options['id'] = $this->getId() . '-' . $type;
+				/* assign unique id to each alert box */
+				$this->options['id'] = $this->getId() . '-' . $type;
 
-                echo \yii\bootstrap\Alert::widget([
-                    'body' => $message,
-                    'closeButton' => $this->closeButton,
-                    'options' => $this->options,
-                ]);
-            }
+				echo \yii\bootstrap\Alert::widget([
+				'body' => $message,
+				'closeButton' => $this->closeButton,
+				'options' => $this->options,
+				]);
+			}
 
-            $session->removeFlash($type);
-        }
-    }
+			$session->removeFlash($type);
+		}
+	}
 }