Hello! I want to create PHP function which returns string with URL. How to do this please help This function has the following input parameters: $account_email - merchant's email. $item_name - a string with name of item which will be purchased. $item_number - a string with item number. $amount - item cost. $quantity - number of items to be purchased. $invoice - invoice number. $IPN_URL - address of php script which will receive Instant Payment Notification. Functon must return string like: https://www.alertpay.com/PayProcess.aspx?ap_purchasetype=item-goods &ap_amount=5 THANKS