$taxAmt = $template->get_template_vars('dataArray');
$eventTaxAmt = $template->get_template_vars('totalTaxAmount');
$prefixValue = CRM_Core_BAO_Setting::getItem(CRM_Core_BAO_Setting::CONTRIBUTE_PREFERENCES_NAME, 'contribution_invoice_settings');
$invoicing = CRM_Utils_Array::value('invoicing', $prefixValue);
if ((!empty($taxAmt) || isset($eventTaxAmt)) && (isset($invoicing) && isset($prefixValue['is_email_pdf']))) {
$taxAmt = $template->get_template_vars('dataArray');
$eventTaxAmt = $template->get_template_vars('totalTaxAmount');
$prefixValue = CRM_Core_BAO_Setting::getItem(CRM_Core_BAO_Setting::CONTRIBUTE_PREFERENCES_NAME, 'contribution_invoice_settings');
$invoicing = CRM_Utils_Array::value('invoicing', $prefixValue);
if ((!empty($taxAmt) || isset($eventTaxAmt)) && (isset($invoicing) && isset($prefixValue['is_email_pdf']))) {