http://localhost/dt/node/124/submission/18
In this case, 124 is the node id while 18 is the submission id.
Now, on to the code.
$nid = 124; $sid = 18; $webform = node_load($nid); $sub = webform_get_submission($nid, $sid); // Capture the component IDs for easier array mapping. foreach ($webform->components as $cid => $cfield) { $components[$cfield['form_key']] = $cid; } // Retrieve user info $user_info = new stdClass(); $user_info->username = $sub->data[$components['username']][0]; $user_info->email = $sub->data[$components['e_mail_address']][0]; // And the rest of your processing...
You can use this method to easily reference the fields stored in the row by field name instead of index number.