Hide Button on Codeigniter

I am beginner of codeigniter

I want to hide this button action when status is completed



this is my code on admin order

Code:

<div class="btn-wrapper pull-left">
                                                <a target="__blank" href="<?php echo $burl.'/print_delivery?id='.$value['order_id']; ?>" class="btn btn-success md-trigger">
                                                    <i class="fa fa-print"></i> Print
                                                </a>
                                            </div>

and this is my controller

Code:

public function print_delivery()
    {
        $id_order = $this->input->get('id');

        $this->load->model('Order');
        $this->Order->updatePrintStatus($id_order);

please help me