<form id="pay" action="https://www.liqpay.com/api/pay" method="POST">
<input type="hidden" name="public_key" value="i33330388619" />
<input type="hidden" name="amount" value="<?php echo $this->amount?>"/>
<input type="hidden" name="currency" value="UAH" />
<input type="hidden" name="type" value="buy" />
<input type="hidden" name="sandbox" value="1" />
<input type="hidden" name="order_id" value="<?php echo $this->number?>" />
<input type="hidden" name="description" value="оплата сертификата #<?php echo $this->number?> (<?php echo $this->amount?>)" />
 <input type="hidden" name="return_url" value="http://luli.webakula.com.ua/gift/thanks" />
<input type="hidden" name="server_url" value="http://luli.webakula.com.ua/gift/process" />