<?php

$code = '6082761178328272';
$pin = '15388571';

$data = post_curl('https://www.starbucks.com/card/guestbalance', array('Card.Number' => $code, 'Card.Pin' => $pin));

if(preg_match_all('/<span class="fetch_balance_value">(.*?)<\/span>/', $data, $matches))
	echo 'Good code - '.$code.', balance: '. $matches[1][0]."\n";
else
	echo 'Wrong code - '.$code;

function post_curl($url, $postfields = '')
{

	$ch = curl_init();
	curl_setopt($ch, CURLOPT_URL, $url);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
	curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
	curl_setopt($ch, CURLOPT_POST, 1);
	curl_setopt($ch, CURLOPT_POSTFIELDS, $postfields);
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
	$result = curl_exec($ch);

	return $result;

}

?>