PHP/SQL分组

我有这样一个问题，我只想将所有车型分组并列出一次，我的问题如下：

我希望它看起来像这样：

MySQL：

$all_model = $mysqli->query("SELECT mark, mark_url, model, model_url, engine, engine_url, generation, generation_url, year_production, body_car, body_car_url FROM auta WHERE mark_url = '$code_curr[3]' and model_url = '$code_curr[4]' GROUP BY generation, body_car");

PHP:

---

您肯定应该为您的项目使用一些模板引擎，因为随着时间的推移，它会变得更加复杂，而且混合使用PHP和HTML会造成更大的混乱

我的想法是获得您想要的数据结构，然后在两个数组上迭代。有了模板引擎，它看起来会比我的代码更漂亮

<?php
$generations = [];
foreach ($all_model as $value) {

    if (!isset($generations[$value['generation']])) {
        $generations[$value['generation']] = [];
    }

    $generations[$value['generation']][] = $value;
}

foreach ($generations as $generation => $model): ?>
    <div class="col-lg-3">
        <div class="crand-car-container">
            <?php echo "Generation:" . $generation; ?>
            <?php foreach ($model as $value): ?>
                <a href="/<?php echo $value['mark_url'] ?>/<?php echo $value['model_url'] ?>/<?php echo $value['generation_url'] ?>/<?php echo $value['body_car_url'] ?>"><?php echo $value['mark'] . " " . $value['model'] . " " . $value['year_production'] . " [" . $value['generation'] . "]" ?></a>
            <?php endforeach; ?>
        </div>
    </div>
<?php endforeach; ?>

---

您想实现一个简单的控制中断…将当前记录的生成与上一个记录的生成进行比较，然后根据它们是否匹配，做出相应的反应。这些可能会对您有所帮助，或者警告：您完全可以使用参数化的预处理语句，而不是手动生成查询。它们由或提供。永远不要相信任何形式的输入！即使您的查询仅由受信任的用户执行。

<?php
$generations = [];
foreach ($all_model as $value) {

    if (!isset($generations[$value['generation']])) {
        $generations[$value['generation']] = [];
    }

    $generations[$value['generation']][] = $value;
}

foreach ($generations as $generation => $model): ?>
    <div class="col-lg-3">
        <div class="crand-car-container">
            <?php echo "Generation:" . $generation; ?>
            <?php foreach ($model as $value): ?>
                <a href="/<?php echo $value['mark_url'] ?>/<?php echo $value['model_url'] ?>/<?php echo $value['generation_url'] ?>/<?php echo $value['body_car_url'] ?>"><?php echo $value['mark'] . " " . $value['model'] . " " . $value['year_production'] . " [" . $value['generation'] . "]" ?></a>
            <?php endforeach; ?>
        </div>
    </div>
<?php endforeach; ?>