[Drupal] How to submit webform to an external application?

In one of my Drupal projects, I had a requirement to submit data from a webform to an external application. hook_webform_submission_insert() helps to meet my requirement. In your custom module, call the hook function hook_webform_submission_insert().

The below syntax will help you to implement and add your valuable code in each switch case.

/**
 * Implement hook_webform_submission_insert().
 * @param $node
 *   The Webform node on which this submission was made.
 * @param $submission
 *   The Webform submission data, that was just inserted into the database.
 */ 
function my_module_webform_submission_insert($node, $submission){
  $webform_id = $node->nid;
  switch ($webform_id) {
    case CONTACTUS_NODE_ID:
	// Prepare data to be passed.
  // Call to submit your data.
    break;
   }
}

Now, if you have any queries or doubts, please feel free to post your comments or contact us.