public function convert($to, $from)
{
$fileHandler = new FileHandler('fiat/bitcoinindex/' . strtolower($to) . '_' . strtolower($from) . '.json');
if ($GLOBALS['cached'] == false || $fileHandler->lastTimeModified() >= 3600) {
// updates every 1 minute
$data = array();
$data = curlCall($this->_url . '/v0.1/conversions/' . strtolower($from) . '/' . strtolower($to));
// /v0.1/conversions/:from/:to
$fileHandler->write(json_encode($data));
return $data;
}
return json_decode($fileHandler->read(), true);
}
