$products[1]['ItemName'] = 'my item 2'; //Item Name
$products[1]['ItemPrice'] = 10; //Item Price
$products[1]['ItemNumber'] = 'xxx2'; //Item Number
$products[1]['ItemDesc'] = 'good item 2'; //Item Number
$products[1]['ItemQty'] = 3; // Item Quantity
*/
//-------------------- prepare charges -------------------------
$charges = [];
//Other important variables like tax, shipping cost
$charges['TotalTaxAmount'] = 0;
//Sum of tax for all items in this order.
$charges['HandalingCost'] = 0;
//Handling cost for this order.
$charges['InsuranceCost'] = 0;
//shipping insurance cost for this order.
$charges['ShippinDiscount'] = 0;
//Shipping discount for this order. Specify this as negative number.
$charges['ShippinCost'] = 0;
//Although you may change the value later, try to pass in a shipping amount that is reasonably accurate.
//------------------SetExpressCheckOut-------------------
//We need to execute the "SetExpressCheckOut" method to obtain paypal token
$paypal->SetExpressCheckOut($products, $charges);
} elseif (_GET('token') != '' && _GET('PayerID') != '') {
//------------------DoExpressCheckoutPayment-------------------
//Paypal redirects back to this page using ReturnURL, We should receive TOKEN and Payer ID
//we will be using these two variables to execute the "DoExpressCheckoutPayment"
//Note: we haven't received any payment yet.
$paypal->DoExpressCheckoutPayment();
} else {
//order form
}
