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// +----------------------------------------------------------------------+
//
// $Id: Rates_NBP.php,v 1.1.1.1 2003/09/13 15:03:54 mroch Exp $
/**
* Exchange rate driver - XE.net
*
* Retrieves exchange rates from XE.net
* Snippet from RatesA.html:
*
* @link http://www.xe.net
*
* @author Unknown
* @copyright
* @license http://www.php.net/license/2_02.txt PHP License 2.0
* @package Services_ExchangeRates
*/
/**
* Include common functions to handle cache and fetch the file from the server
*/
require_once 'Services/ExchangeRates/Common.php';
/**
* National Bank of Poland Exchange Rate Driver
*
* @package Services_ExchangeRates
*/
class Services_ExchangeRates_Rates_XE extends Services_ExchangeRates_Common {
/**
* URL of HTML page where the rates are given
* @var string
*/
var $feedHTMLUrl = 'http://www.xe.com/ict/?basecur=USD&hide_inverse=true&historical=false';
/**
* Downloads exchange rates from XE.com
* This information is updated daily, and is cached by default for 1 hour.
*
* Returns a multi-dimensional array containing:
* 'rates' => associative array of currency codes to exchange rates
* 'source' => URL of feed
* 'date' => date feed last updated, pulled from the feed (more reliable than file mod time)
*
* @param int Length of time to cache (in seconds)
* @return array
*/
function retrieve($cacheLength, $cacheDir) {
$return['rates'] = array('USD' => 1.0);
$return['source'] = $this->feedHTMLUrl;
// retrieve XML address
$htmlpage = $this->retrieveFile($this->feedHTMLUrl, $cacheLength, $cacheDir);
//Get date rates were generated
preg_match('/rates as of (.*)<\/td>/i', $htmlpage, $raw_date);
if ( isset($raw_date[1]) )
{
$return['date'] = strtotime( $raw_date[1] );
}
//Remove any HTML comments.
$htmlpage = preg_replace('//i','', $htmlpage );
//Get actual rates here
preg_match_all('/| ([A-Z]{3,5})<\/td> | (.*)<\/td> | ([0-9\.,]{9,20})<\/td>/i', $htmlpage, $matches);
if ( is_array($matches) )
{
foreach( $matches[1] as $key => $val ) {
if ( isset($matches[3][$key]) ){
$return['rates'][trim($val)] = str_replace( array(' ', ','), '', $matches[3][$key] );
}
}
}
return $return;
}
}
?>
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