public function file($name = null, $value = null, $attr = null)
    {
        return $this->createInput('file', $name, $value, $attr);
    }
public function file($name = null, $value = null, $attr = null)
    {
        return $this->createInput('file', $name, $value, $attr);
    }
public function file ( $ name = null , $ value = null , $ attr = null ) { return $ this -> createInput ( 'file' , $ name , $ value , $ attr ) ; }
Create html file input
@param string|null $name
@param string|null $value
@param array|string|null $attr
@return Input\Input
Create html file input