public function contactsDelete($contact_ids)
 {
     $c = new waContactsCollection('id/' . implode(',', $contact_ids));
     $contacts = $c->getContacts('name,phone,email');
     foreach ($contacts as &$contact) {
         if (is_array($contact['phone'])) {
             $phone = reset($contact['phone']);
             if (is_array($phone)) {
                 if (isset($phone['value'])) {
                     $phone = $phone['value'];
                 } else {
                     $phone = '';
                 }
             }
             $contact['phone'] = $phone;
         }
         if (is_array($contact['email'])) {
             $email = reset($contact['email']);
             $contact['email'] = $email;
         }
     }
     $comment_model = new photosCommentModel();
     foreach ($contacts as $contact) {
         // Insert contact name into their reviews
         $comment_model->updateByField('contact_id', $contact['id'], array('contact_id' => 0, 'name' => $contact['name'], 'email' => $contact['email'], 'auth_provider' => null));
     }
 }