$p->add_field('item_name_1', $_POST["product_name"]);
$p->add_field('item_number_1', $_POST["sku"]);
$p->add_field('quantity_1', $_POST["quantity"]);
$p->add_field('amount_1', $_POST["product_amount"]);
$p->add_field('first_name', $_POST["payer_fname"]);
$p->add_field('last_name', $_POST["payer_lname"]);
$p->add_field('address1', $add);
$p->add_field('city', $_POST["payer_city"]);
$p->add_field('state', $_POST["payer_state"]);
$p->add_field('country', $_POST["payer_country"]);
$p->add_field('zip', $_POST["payer_zip"]);
$p->add_field('email', $_POST["payer_email"]);
//$p->add_field('sku', $_POST["sku"]);
$p->submit_paypal_post();
// POST it to paypal
$p->dump_fields();
// Show the posted values for a reference, comment this line before app goes live
break;
case "success":
// success case to show the user payment got success
echo '<title>Payment Done Successfully</title>';
echo '<style>.as_wrapper{
font-family:Arial;
color:#333;
font-size:14px;
padding:20px;
border:2px dashed #17A3F7;
width:600px;
margin:0 auto;
}</style>
';
