title: Can anyone translate this to plain english? PHP translation?
body: <p>I'm working on modifying some existing code for a payment gateway and I'm not sure what this means. Is it saying something like the 4th element of the array coming back from the gateway? If someone can tell me what it means it would be a big help.</p>
  
  <pre><code>$transactionID = (isset($authNetCodes[4])) ? $authNetCodes[4] : 0;
  $transactionMessage = (isset($authNetCodes[3])) ? $authNetCodes[3] : "";
  </code></pre>
  
  <p>Any help would be appreciated.</p>
  
  <p>Thanks,
  JK</p>