在foreach循环中嵌套值

Question

I have a series of loops that and I need to get the values to pass correctly. Basically I have a product object from hikashop in joomla. In order to get my display to work the way I want it to behave, I had to separate the images into a separate array and use array_unique to filter duplicate images as hikashop assigns the default to each product variant and was getting duplicate images for each variant on the display. I need the display to show each filtered image, but then assign the $char_id to them image so that when it is clicked on it will change the main product image.

So wher I'm at is that The images are displaying correctly, but it is only picking up the first key in $characteristic->variant_characteristic_id for every image rather than getting the unique key for each image.

I fear I'm a bit over my head here, Thanks

Here is my code block:

if ($this->element->variants):
    $i = 0;
    foreach($this->element->variants as $variant):
        foreach($variant->characteristics as $k => $characteristic):
            $char_id = $characteristic->variant_characteristic_id;
            $cat_id = $k;
            $char_name = $characteristic->characteristic_value;
            foreach($variant->images as $key => $image):
                $images[$i] = array($key => $image);
                $i++;
            endforeach;
            $images = array_map("unserialize", array_unique(array_map("serialize", $images)));
        endforeach;
    endforeach;
    echo '<pre>'.print_r($images).'</pre>';
    foreach($images as $image):
        echo '
            <div class="product-thmb-group">
                <img id="hikashop_child_image_'.$char_id.'" class="hikashop_child_image" src="' . $this->image->uploadFolder_url . $image[0]->file_path . '" alt="hikashop_child_image_' . $char_id . '"  />
                <span class="product-thmb-title">'.$char_name.'</span>
            </div>';
    endforeach;
endif;

Answer 1

it would help if you also provided an example payload, payload being whatever is in $this->element->variants.

Anyway spotting the problem was easy, you are overwriting the values of $char_id, $cat_id, $char_name on each iteration of the loop.

You are also iterating through all of the images once for each item in $variant->characteristics which is probably not what you are intending. Without seeing the payload that you are trying to parse I can only guess but I think what you want to do is something along the line of:

$i = 0;
$images = [];
foreach($this->element->variants as $variant) {
    $characteristic = $variant->characteristics[$i];
    $image = $variant->images[$i];

    $images[$image] = [
        "id" => $characteristic->variant_characteristic_id,
        "name" => $characteristic->characteristic_value,
        "image" => $image, // this is optional
    ];
    $i++;
}

Then you should be able to loop through the array

foreach($images as $image => $meta) {
    echo "Image src: ", $image,
         " Id: ", $meta['id'], " Name: ", $meta['name'], "\n";
}

Or if you kept the optional assignment above

foreach($images as $data) {
    echo "Image src: ", $data['image'],
         " Id: ", $data['id'], " Name: ", $data['name'], "\n";
}