public function getAdditionalCert($signkey = self::KEY_PRIMARY) { global $prefs; $key = $prefs->getValue($signkey ? 'smime_additional_sign_cert' : 'smime_additional_cert'); if (!$key && $signkey == self::KEY_SECONDARY_OR_PRIMARY) { $key = $prefs->getValue('smime_additional_cert'); } return $key; }