What are some alternative methods to obtaining ASINs for a large number of products from a specific seller on Amazon for website integration?

When integrating a large number of products from a specific seller on Amazon into a website, obtaining ASINs manually can be time-consuming. An alternative method is to use the Amazon Product Advertising API to programmatically retrieve ASINs for a list of products based on the seller's ID.

// Initialize the Amazon Product Advertising API
require 'vendor/autoload.php';

use ApaiIO\Configuration\GenericConfiguration;
use ApaiIO\Operations\Search;
use ApaiIO\ApaiIO;

$conf = new GenericConfiguration();
$conf
    ->setCountry('com')
    ->setAccessKey('YOUR_ACCESS_KEY')
    ->setSecretKey('YOUR_SECRET_KEY')
    ->setAssociateTag('YOUR_ASSOCIATE_TAG');

$apaiIO = new ApaiIO($conf);

// Define the seller ID
$sellerId = 'SELLER_ID';

// Define the list of products
$products = array('PRODUCT_1', 'PRODUCT_2', 'PRODUCT_3');

// Retrieve ASINs for each product
foreach ($products as $product) {
    $search = new Search();
    $search
        ->setCategory('All')
        ->setKeywords($product)
        ->setMerchantId($sellerId);

    $response = $apaiIO->runOperation($search);

    $asin = $response['Items']['Item'][0]['ASIN'];
    echo "ASIN for $product: $asin\n";
}