Question about copying action in a php function - php

Question

I am total newbie but I am trying to modify this script:
public function fetchProducts($syncAll = true)
{
$this->library = new B1([
'apiKey' => $this->settings->get('api_key'),
'privateKey' => $this->settings->get('private_key')
]);
$i = 0;
$enableQuantitySync = $this->settings->get('quantity_sync');
$enableSyncItemName = $this->settings->get('sync_item_name');
$enableSyncItemPrice = $this->settings->get('sync_item_price');
$this->items->resetAllB1ReferenceId();
$page = 0;
$warehouseId = 7;
$data = [];
do {
$i++;
try {
$response = $this->library->request('e-commerce/items/stock', [
'warehouseId' => $warehouseId,
'page' => ++$page,
'pageSize' => 100,
'filters' => [
'groupOp' => 'AND',
'rules' => [
],
],
]);
$data = $response->getContent();
foreach ($data['data'] as $item) {
if ($item['code'] != NULL) {
$this->items->updateProductReferenceId($item['id'], $item['code']);
if ($enableQuantitySync == 1) {
$this->items->updateProductQuantity2($item['quantity'], $item['id']);
}
if ($enableSyncItemName == 1) {
$this->items->updateItemName($item['name'], $item['id']);
}
if ($enableSyncItemPrice == 1) {
$this->items->updateItemPrice($item['priceWithoutVat'], $item['id']);
}
}
}
} catch (B1Exception $e) {
$content = $e->getResponse()->getContent();
$this->helper->printPre($content['message']);
} catch (B1DuplicateException $e) {
$content = $e->getResponse()->getContent();
$this->helper->printPre($content['message']);
} catch (B1DuplicateException $e) {
$content = $e->getResponse()->getContent();
$this->helper->printPre($content['message']);
} catch (B1ValidationException $e) {
$content = $e->getResponse()->getContent();
$this->helper->printPre($content['message']);
} catch (B1ResourceNotFoundException $e) {
$content = $e->getResponse()->getContent();
$this->helper->printPre($content['message']);
} catch (B1InternalErrorException $e) {
$content = $e->getResponse()->getContent();
$this->helper->printPre($content['message']);
}
echo "$i;";
} while (isset($data['pages']) && $page <= $data['pages'] && $i < self::MAX_ITERATIONS);
echo 'OK';
}
This script works fine, but I want to add another warehouse id = 2 in this function, so I am trying add this piece of code inside of function:
$warehouseId = 2;
$data = [];
do {
$i++;
try {
$response = $this->library->request('e-commerce/items/stock', [
'warehouseId' => $warehouseId,
'page' => ++$page,
'pageSize' => 100,
'filters' => [
'groupOp' => 'AND',
'rules' => [
],
],
]);
$data = $response->getContent();
foreach ($data['data'] as $item) {
if ($item['code'] != NULL) {
$this->items->updateProductReferenceId2($item['id'], $item['code']);
if ($enableQuantitySync == 1) {
$this->items->updateProductQuantity2($item['quantity'], $item['id']);
}
if ($enableSyncItemName == 1) {
$this->items->updateItemName2($item['name'], $item['id']);
}
if ($enableSyncItemPrice == 1) {
$this->items->updateItemPrice2($item['priceWithoutVat'], $item['id']);
}
}
}
}
But I am getting errors.
Can someone help me to figure out a solution for this?
I was trying to add selected code in the function, but I am getting errors.