Code snippet that can be used to programmatically delete a Webform Submissions in Drupal 8.
$query = \Drupal::entityQuery('webform_submission')
->condition('webform_id', $WEBFORM_ID)
->accessCheck(FALSE);
$result = $query->execute();
foreach ($result as $item) {
$submission = \Drupal\webform\Entity\WebformSubmission::load($item);
$submission->delete();
}
if you want to programmatically delete a Webform from your website you can use code like this:
$webform = \Drupal::entityTypeManager()->getStorage('webform')->load($WEBFORM_ID);
if ($webform) {
$webform->delete();
}
Example how to delete the default contact webform:
$webform = \Drupal::entityTypeManager()->getStorage('webform')->load('contact');
if ($webform) {
$webform->delete();
}
