[spinastr]

laimas,
поменял стрелка не появилась

<?
$dir = dirname(__FILE__);
chdir($dir);

libxml_use_internal_errors();
if($xml = simplexml_load_file('http://www.cbr.ru/scripts/XML_dynamic.asp?date_req1='.date('d/m/Y', strtotime('-3 day')).'&date_req2='.date('d/m/Y', strtotime('-1 day')).'&VAL_NM_RQ=R01235')) {
    $last = round((float)str_replace(',', '.', current($xml->Record[0]->Value)), 2);
    $usd_prev = round((float)str_replace(',', '.', current($xml->Record[1]->Value)), 2);
    $usd_curr = round((float)str_replace(',', '.', current($xml->Record[2]->Value)), 2);
    
    chmod($dir, 0777);
    
    file_put_contents('current.json',
        json_encode(
            array(
                'current' => array(
                'date' => date('j.n.Y'),
                'value' => $usd_curr,
                'rate' => intval($usd_curr > $usd_prev) 
            ),
            'previous' => array(
                'date' => date('j.n.Y', strtotime('-1 day')),
                'value' => $usd_prev,
                'rate' => intval($usd_prev > $last)
            )
        ))
    );
    
    chmod($dir, 0700);
}
?>