基于类别的循环结果但仅显示类别一次

Question

I have a table that has 2 columns:

Product
Title

I'm doing:

SELECT * FROM products ORDER BY product

I want to loop all the results of Title but only show Product once per grouping:

Product
--Title
--Title
--Title

Product
--Title
--Title
--Title

I'm doing a regular do while loop and of course it's showing the Product column for each row. I know I've done this before but can't for the life of me remember! Any ideas? Thanks.

Answer 1

Since you're already ordering your result by product, you could do something like this:

$currentProduct = null;

foreach($products as $product) {

    if ($currentProduct != $product['product']) {
        // We got a new product. Show it with some fancy html
        // Then store it in $currentProduct for the next iteration 
        $currentProduct = $product['product'];
    }

    // Show the title with some fancy html
}

If you want to use your existing do while -loop instead, it's the same.