Catalog Integration Using Meta Business SDK

Api::init($app_id, $app_secret, $access_token);

// Create Product Items using Items Batch API
$catalog = new ProductCatalog($catalog_id);
$response = $catalog->createItemsBatch(
 array(),
 array(
 "item_type" => "PRODUCT_ITEM",
   "requests" => array(
     // Item 1 - Create Item
     array(
       "method" => "create",
       "data" => array(
         "id" => "retailer_id_1",
         "title" => "Product Title",
         "description" => "Product Description",
         "brand" => "BrandName",
         "price" => "20.00 USD",
         "image_link" => "image_url",
         "availability" => "in stock",
         "link" => "http://productlink.com/product/retailer_id",
       )
     ),
     // Item 2 - Update item with retailer_id_2
     array(
       "method" => "update",
       "data" => array(
         "id" => "retailer_id_2",
         "title" => "Product Title 2",
       )
     ),
     // Item 3 - Delete item with retailer_id_3
     array(
       "method" => "delete",
       "data" => array(
         "id" => "retailer_id_3",
       )
     )
   )
)
)

Api::init($app_id, $app_secret, $access_token);

// Get all products in a catalog
$catalog = new ProductCatalog($catalog_id);
$cursor = $catalog->getProducts();
//$cursor->setUseImplicitFetch(true); Set true for Auto Scroll

while ($cursor->valid()) {
   echo $cursor->current()->{ProductItemFields::NAME}.PHP_EOL;
   echo $cursor->current()->{ProductItemFields::ID}.PHP_EOL;
   $cursor->next();
}

$cursor->end(); // Set cursor to the end of the lst
$cursor->fetchAfter(); // Fetch the next page
$cursor->next(); // Move the cursor to the next item

while ($cursor->valid()) {
   echo $cursor->current()->{ProductItemFields::NAME}.PHP_EOL;
   echo $cursor->current()->{ProductItemFields::ID}.PHP_EOL;
   $cursor->next();
}