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[Решено?..] Сравнение

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Добрый день! Подскажите как можно реализовать:

Например есть 2 дрели, в одной указана мощность, в другой этого атрибута нету. И как сделать, чтобы при сравнении этих дрелей вместо пустого поля (напротив данной характеристики) светилась надпись "нет данных"?


Заранее спасибо

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        <td><?php echo $attribute['name']; ?></td>
        <?php foreach ($products as $product) { ?>
        <?php if (isset($products[$product['product_id']]['attribute'][$key])) { ?>
        <td><?php echo $products[$product['product_id']]['attribute'][$key]; ?></td>
        <?php } else { ?>
        <td>нет данных</td>
        <?php } ?>
        <?php } ?>

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