template;
$preview = str_replace('{contact_firstname}', 'John', $preview);
$preview = str_replace('{contact_lastname}', 'Doe', $preview);
$preview = str_replace('{client_company}', 'Sample Company Ltd', $preview);
$preview = str_replace('{client_phonenumber}', '+233123456789', $preview);
$preview = str_replace('{invoice_number}', 'INV-2025-001', $preview);
$preview = str_replace('{invoice_duedate}', date('Y-m-d', strtotime('+7 days')), $preview);
$preview = str_replace('{invoice_total}', app_format_money(1000, get_base_currency()), $preview);
$preview = str_replace('{invoice_status}', _l('invoice_status_unpaid'), $preview);
echo htmlspecialchars($preview);
?>