prepare("
SELECT
a.name,
a.unit,
a.dataType,
pa.valueString,
pa.valueNumber,
pa.valueBool
FROM products p
INNER JOIN categoryAttributes ca
ON p.categoryID = ca.categoryID
INNER JOIN attributes a
ON ca.attributeID = a.attributeID
LEFT JOIN productAttributes pa
ON pa.productID = p.productID
AND pa.attributeID = a.attributeID
WHERE p.productID = ?
ORDER BY a.attributeID
");
$stmt->bind_param("i", $productId);
$stmt->execute();
$result = $stmt->get_result();
$product = $result->fetch_assoc();
?>
fetch_assoc()) {
echo "
{$row['name']}: ";
if (!empty($row['valueString'])) echo $row['valueString'];
if (!empty($row['valueNumber'])) echo $row['valueNumber'] . " " . $row['unit'];
if (!is_null($row['valueBool'])) echo $row['valueBool'] ? "Ja" : "Nein";
echo "