[英]PHP while loop to display categories then products under it
我正在尝试根据程序中的产品类别显示产品列表。 到目前为止,这就是我的代码:
$query = "SELECT products_name, categories_desc, id, price
FROM products, categories
WHERE products.categories_id = categories.categories_id";
$result = mysql_query($query);
while($row=mysql_fetch_array($result)){
echo "<b>" . $row['categories_desc'] . "</b><br>";
while($row=mysql_fetch_array($result)){
echo "<input type='checkbox' name='" . $row['products_name'] . "' value='" . $row['price'] . "'>" . $row["products_name"] . "</br>";
}
}
但是显然,我做错了。 它仅显示第一个类别,然后显示所有产品。 帮忙,有人吗? 提前致谢!
您不需要第二个循环。 这是程序中的错误。
应该是这样的:
$query = "SELECT products_name, categories_desc, id, price
FROM products, categories
WHERE products.categories_id = categories.categories_id";
$result = mysql_query($query);
$last_category='';
while($row=mysql_fetch_array($result)){
if ($last_category!=$row['categories_desc']){
echo "<b>" . $row['categories_desc'] . "</b><br>";
$last_category=$row['categories_desc'];
}
echo "<input type='checkbox' name='" . $row['products_name'] . "' value='" . $row['price'] . "'>" . $row["products_name"] . "</br>";
}
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