title: Could not resolve host: api-3t.sandbox.paypal.com
body: <p>I am trying to implement paypal pro credit card payment in php</p>
  
  <p>I get following error no matter what i do.</p>
  
  <ul>
  <li>Could not resolve host: api-3t.sandbox.paypal.com</li>
  </ul>
  
  <p>Its a DNS problem of computer I think. But are there any chances of CODE being wrong?</p>