[spinastr]

laimas,

это?

<script> 
//именно такое и получит Ajax 
$.getJSON("http://h116641.s08.test-hf.su/", function(data) { 
$('.usddata').html(data.current.date);
$('.usddata2').html(data.previous.date);
//и вот тут данные этого объекта помещаются на свои места 
$.each(data, function(k, o) { 
$('.'+k).html("$ " + o.value + ' <b class=' + ['','down','up'][o.rate] +'>' + ['','▼','▲'][o.rate] +'</b>').attr("title", o.date) 
}) 
}); 
</script>

или

<?
    $currency = json_decode(file_get_contents('current.json'));

    libxml_use_internal_errors();
    if($xml = simplexml_load_file('http://www.cbr.ru/scripts/XML_daily.asp?date_req='.date('d/m/Y'))) {

        $date = strtotime($xml->attributes()->Date);
        
        if($date > strtotime($currency->current->date)) {
        
            foreach ($xml->children() as $child) {
                if($child->NumCode==840) {
                    $usd = round((float)str_replace(',', '.', $child->Value), 2);
                    break;
                }
            }
    
            if($usd) {
        
                if($rate = $usd - $currency->current->value) $rate = $rate < 0 ? 1 : 2;
    
                $currency->previous = clone $currency->current;
                $currency->current->date = date('j.n.Y', $date);
                $currency->current->value = $usd;
                $currency->current->rate = $rate;
                
                $dir = dirname(__FILE__);
                chdir($dir);
    
                chmod($dir, 0777);
                file_put_contents('current.json',json_encode($currency));
                chmod($dir, 0700);
            }
        }
    }
?>