';print_r($c );
            $rates[(string)$c['currency']] = (string)$c['rate'];
        }
        $rates['RMB'] = $rates['CNY'] ;
        
        
        
        // now try loading from latest..
       
             // this may fail...
        $f = @file_get_contents('http://www.ecb.europa.eu/stats/eurofxref/eurofxref-daily.xml');
        if (!strlen($f)) {
            return false;
        }
        
        $dom = simplexml_load_file($target);
        $rates['EUR'] = 1.0;
        
        foreach($dom->Cube->Cube->Cube as $c) {
           //echo '
';print_r($c );
            $rates[(string)$c['currency']] = (string)$c['rate'];
        }
        $rates['RMB'] = $rates['CNY'] ;
        
        foreach($rates as $cur=>$euro) {
            

            $rate = $this->rates['USD'] * $euro;
            
            
            
            
            
            
            
            
            $ov = DB_DataObject::Factory('core_curr_rate');
            $ov->curr = $cur;
            $nl = clone($x);
            $ov->orderBy('to_date DESC');
            $ov->limit(1);
            
            
            $nl->from_dt = DB_DataObject::sqlValue("NOW()");
            $nl->to_dt = DB_DataObject::sqlValue("NOW() + INTERVAL 7 DAY");
            if ($ov->find(true)) {
                if (strtotime($ov->to_date) > time()) {
                    continue;
                }
                $nl->from_dt = $ov->to_date;
                
            
                if ($ov->rate == $rate) {
                    // modify the old one to expire
                    $oo = clone($ov);
                    $ov->to_date = $nv->to_from_dt;
                    $ov->update($oo);
                    continue;
                }
            } else {
                // no previous record...
                $nl->from_dt = '1970-01-01 00:00:00';
            }
            $nl->rate = $rate;
            // create a new row.
            $nl->insert();
            
            
            
        }
        
        
    }
    function rate($cur, $when)
    {
        $this->loadRates(); // check if we have an rates.
        
        $r = DB_DataObject::factory('core_curr_rate');
        $r->curr = $cur;
        $r->whereAdd("from_dt < '" . date('Y-m-d H:i:s', strtotime($when)) . "'");
        $r->orderBy('to_dt ASC');
        $r->limit(1);
        
    }
    
    function convert($val, $from, $to, $when = false)
    {
        
        
        
        if ($r === false) {
            return false;
        }
        if (!isset($this->rates[$from]) || !isset($this->rates[$to]) ) {
            return false;
        }
        //echo '
';print_R($this->rates);
        $base = (1.0 / $this->rates[$from]) * $val;
  
        return $this->rates[$to] * $base;
    
    }
    
    
    
}