$item1, 'item2' => $item2]; } $format = isset($_GET['format']) ? strtolower($_GET['format']) : 'json'; $itemIdFilter = isset($_GET['item_id']) ? trim($_GET['item_id']) : null; $sql = "SELECT s.item_id, s.saleable_quantity FROM statistics_daily s INNER JOIN pr_parameters p ON s.item_id = p.item_id WHERE p.data_status IN (1, -1) "; $result = $conn->query($sql); if (!$result) { die('Lekérdezési hiba: ' . $conn->error); } $data = []; $dataMap = []; while ($row = $result->fetch_assoc()) { $data[] = $row; $dataMap[$row['item_id']] = $row['saleable_quantity']; } if ($itemIdFilter !== null) { $data = array_filter($data, function($row) use ($itemIdFilter) { return $row['item_id'] === $itemIdFilter; }); $data = array_values($data); } switch ($format) { case 'csv': header('Content-Type: text/csv; charset=utf-8'); header('Content-Disposition: attachment; filename="export.csv"'); $output = fopen('php://output', 'w'); if (!empty($data)) { fputcsv($output, array_keys($data[0])); foreach ($data as $row) { fputcsv($output, $row); } } fclose($output); break; case 'xml': header('Content-Type: application/xml; charset=utf-8'); $xml = new SimpleXMLElement(''); foreach ($data as $row) { $item = $xml->addChild('item'); foreach ($row as $key => $value) { $item->addChild($key, htmlspecialchars($value)); } } echo $xml->asXML(); break; case 'json': default: header('Content-Type: application/json; charset=utf-8'); echo json_encode($data, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT); break; } $conn->close(); ?>