首先，我尝试了几乎所有类似问题的解决方案，但我无法得到结果。我正在尝试更换设计以显示一些数据。我已将产品列表存储在
$prods = array()
因此，当我尝试让这些产品改变它们在网页上的显示方式时，我做了如下操作：
$aux = count($prods);
foreach($prods as $key => $value):?>
<?php if($aux%2 == 0): ?>
<html>
<div class="container">
<div class="row justify-content-around my-3">
<figure class="col-6 figure my-3 row justify-content-center">
<img style="height: 20vw" src="imagenes/d3.jpeg" class="figure-img img-fluid rounded" alt="...">
</figure>
<div class="col-6 row justify-content-around">
<div class="col row align-items-center">
<div class="col display-3"><?php $value ?></div>
<div class="col-12 display-5">Lorem ipsum dolor sit amet consectetur adipisicing elit. Aperiam saepe ipsum quod nesciunt labore magni a perspiciatis sunt officia facere, reprehenderit praesentium explicabo ipsa eligendi! Cumque nulla reiciendis perferendis sequi.</div>
<p class="col-12 lead">Precio: Lorem, ipsum dolor.</p>
</div>
</div>
</div>
</div>
</html>
<?php $aux = $aux-1; ?>
<?php else: ?>
<html>
<div class="container">
<div class="row justify-content-around my-3">
<div class="col-6 row justify-content-around">
<div class="col row align-items-center">
<div class="col-12 display-3"><?php $value ?></div>
<div class="col-12 display-5">Lorem ipsum dolor sit amet consectetur adipisicing elit. Aperiam saepe ipsum quod nesciunt labore magni a perspiciatis sunt officia facere, reprehenderit praesentium explicabo ipsa eligendi! Cumque nulla reiciendis perferendis sequi.</div>
<p class="col-12 lead">Precio: Lorem, ipsum dolor.</p>
</div>
</div>
</div>
</div>
</html>
<?php $aux = $aux-1; ?>
<?php endforeach;?>
当我运行它时只得到空白结果。没有html代码。我是 PHP/HTML/MongoDB 的新手，所以我正在努力学习！感谢您。
冉冉说