bitcoin trades

<?php

/* use this code as a guide for how to fetch bitcoin historical trade data from bitcoincharts, based on Bitstamp.net */

/* historical interval in hours */
define('AVERAGE_INTERVAL', 6);

$hist = file("http://api.bitcoincharts.com/v1/trades.csv?symbol=bitstampUSD&start=" . (time() - AVERAGE_INTERVAL * 3600));
if(!is_array($hist)) die("Unable to fetch data .. Try again later!");

$trades = array();
foreach($hist as $entry){
  $trades[] = explode(',', trim($entry));
}

?><pre dir="ltr"><? print_r($trades); ?></pre><?