"; } else { $email_to_validate = $_GET['email_to_validate']; if (ereg("^[A-Za-z0-9\._]+@[A-Za-z0-9\._]+\.[A-Za-z]",$email_to_validate) == 1) { echo "valid email"; } else { echo "invalid email."; } unset($email_to_validate); echo "
again"; } ?>