This is not actually a question. I just wanted to post the answer that a Clover rep helped me find. Here is how to update stock of a clover product with PHP.
require_once 'Requests/library/
Requests.php';Requests::register_autoloader();
$CLOVER_API_URL = '
https://api.clover.com/v3/merchants';
$MERCHANT_ID = 'your_merchant_id';
$API_TOKEN = 'your_api_token';
$CLOVER_AUTH = "Bearer " . $API_TOKEN;
$headers = array( 'Content-Type' => 'application/json', 'Authorization' => $CLOVER_AUTH,);
$data = array( 'item' => array( 'id' => 'id_of_product'), 'quantity' => '37' );
$request = Requests::post($CLOVER_API_URL . '/' . $MERCHANT_ID . '/item_stocks/id_of_product', $headers, json_encode($data));
