add enctypy

src/ActiveForm.php

@@ -31,9 +31,9 @@ class ActiveForm
      * @param string $action
      * @return void
      */
-    public function beginForm(string $action): void
+    public function beginForm(string $action, string $enctype = 'application/x-www-form-urlencoded'): void
     {
-        echo "<form method='POST' action='$action'>";
+        echo "<form method='POST' action='$action' enctype='$enctype'>";
     }
 
     /**