adding Payment Gateway on Codeigniter- Ecommerce b2b Project

Payment gateway on my codeigniter cms vs best review Following are there code of Esewa payment gateway- <form action=”[login to view URL]” ([login to view URL]) ([login to view URL] ([login to view URL]) ) method=”GET”> <input value=”100” name=”amt” type=”hidden”> <input value=”testmerchant” name=”scd” type=”hidden”> <input value=”XYZ-1234” name=”pid” type=” hidden”> <input value=”000AE01” name=”rid” type=” hidden”> <input value=”Submit” type=”submit”> </form <form action="<?php echo $action; ?>" method="post"> <input value="<?php echo $amount; ?>" name="tAmt" type="hidden"> <input value="<?php echo $amount; ?>" name="amt" type="hidden"> <input value="0" name="txAmt" type="hidden"> <input value="0" name="psc" type="hidden"> <input value="0" name="pdc" type="hidden"> <input value="<?php echo $merchant_service_code; ?>" name="scd" type="hidden"> <input value="<?php echo $order_id; ?>" name="pid" type="hidden"> <input value="<?php echo $return_url; ?>" type="hidden" name="su"> <input value="<?php echo $cancel_url; ?>" type="hidden" name="fu"> <div class="buttons"> <div class="pull-right"> <input type="submit" value="<?php echo $button_confirm; ?>" class="btn btn-primary"/> </div> </div> </form>