我有一个包含这些列的 mysql 表：
series_id, series_color, product_name
在输出中，我想按部分列出数据，每个 series_id 一个部分，如下所示：
series_id
A12 Series Product - Milk - Tea - sugar - water B12 Series Product - Water - Banana - Cofee - Tea
按 series_id 对结果进行排序，因此具有相同值的所有产品将放在一起。
$stmt = $pdo->prepare("SELECT series_id, product_name FROM yourTable ORDER BY series_id"); $stmt->execute();
然后，在显示结果时，显示系列标题并在其发生更改时启动新的 ：
$last_series = null; echo "<ul>\n"; while ($row = $stmt->fetch(PDO::FETCH_ASSOC)) { if ($row['series_id'] != $last_series) { if ($last_series) { echo "</ul></li>\n"; } echo "<li>" . $row['series_id'] . " Series Product\n"; echo "<ul>\n"; $last_series = $row['series_id']; } echo "<li>" . $row['product_name'] . "</li>\n"; } if ($last_series) { echo "</li>\n"; } echo "</ul>\n";
按
series_id对结果进行排序，因此具有相同值的所有产品将放在一起。$stmt = $pdo->prepare("SELECT series_id, product_name FROM yourTable ORDER BY series_id"); $stmt->execute();然后，在显示结果时，显示系列标题并在其发生更改时启动新的
$last_series = null; echo "<ul>\n"; while ($row = $stmt->fetch(PDO::FETCH_ASSOC)) { if ($row['series_id'] != $last_series) { if ($last_series) { echo "</ul></li>\n"; } echo "<li>" . $row['series_id'] . " Series Product\n"; echo "<ul>\n"; $last_series = $row['series_id']; } echo "<li>" . $row['product_name'] . "</li>\n"; } if ($last_series) { echo "</li>\n"; } echo "</ul>\n";