This is a collection of PHP scripts wrapping the PayPal NVP API. Which allows interaction with the PayPal NVP (Name-Value Pair) API, for requesting and sending business transaction data.Features of PayPal NVP Transactions:Supported methods:- GetBalance- DoDirectPayment- PayPalCodesRequirements:- PHP 5.2 or Higher- PayPal API keyLimitation:- The entire PayPal NVP command-set is not yet supported.