title: Paypal api - is cURL and IPN needed?
body: <p>Can someone tell me if it possible to make use of the Paypal NVP API in PHP without the use of cURL. eg. when you request the paykey.</p>
  
  <p>also is the Paypal IPN feature (I'm using localhost) necessary, and what is it's function?</p>
  
  <p>Sorry, but the Paypal documentation didn't answer any of these questions.</p>