如何在while循环内创建嵌套列表? [英] How do I create a nested list inside of a while loop?

问题描述

我在尝试获取嵌套<时遇到了麻烦ul>在while循环内.我不确定这是否可能，所以我愿意接受替代方案.

I'm having trouble trying to get a nested < ul > inside of a while loop. I'm not sure if this even possible so i'm open to alternatives.

这里是我的数据库外观以及我要实现的目标的快速图像.

这是我的SQL

SELECT * 
FROM drinks_category, drinks_lookup, drinks 
WHERE drinks.drink_id = drinks_lookup.drink_id 
AND drinks_lookup.drinks_category_id = drinks_category.drinks_category_id
ORDER BY drinks_category.drinks_category_title

这是我的输出PHP

$result = $conn->query($sql) or die(mysqli_error());

$last_category = 0;

while ($row = $result->fetch_assoc()) {

    if($row['drinks_category_id'] != $last_category) {
     echo "<h1>" . $row['drinks_category_title'] . "</h1>";
    }

    echo "<p>" . $row['drink_name'] . "</p>";
    $last_category = $row['drinks_category_id'];

}

我使用mysqli和php.预先感谢！

Im using mysqli and php. Thanks in advance!

推荐答案

将您的while循环更新为以下内容:

Update your while loop to the following:

while ($row = $result->fetch_assoc()) {

if($row['drinks_category_id'] != $last_category) {
 if($last_category != 0) echo '</ul>';
 echo "<h1>" . $row['drinks_category_title'] . "</h1>";
 echo "<ul>";
}

echo "<li>" . $row['drink_name'] . "</li>";
$last_category = $row['drinks_category_id'];

}
if($last_category != 0) echo "</ul>";

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