What steps can be taken to debug and resolve connectivity issues when using PHP to post to Facebook?

To debug and resolve connectivity issues when using PHP to post to Facebook, you can check for any errors returned by Facebook's API, verify that your access token is valid, ensure that your server can communicate with Facebook's servers, and double-check that your code is correctly handling any exceptions that may occur. 

try {
  // Your code to post to Facebook here
} catch (Facebook\Exceptions\FacebookResponseException $e) {
  echo 'Graph returned an error: ' . $e->getMessage();
} catch (Facebook\Exceptions\FacebookSDKException $e) {
  echo 'Facebook SDK returned an error: ' . $e->getMessage();
}

Keywords

Facebook API PHP cURL error handling access token network troubleshooting

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