Просмотр файла app/includes/courses.php

<?php
// libxml_use_internal_errors(true);

if (@filemtime(STORAGE."/temp/courses.dat") < time()-3600 || @filesize(STORAGE."/temp/courses.dat") == 0) {

	#$xml_str = file_get_contents("http://www.cbr.ru/scripts/XML_daily.asp");
	if ($xml_str = curl_connect("http://www.cbr.ru/scripts/XML_daily.asp")){

		$xml = new SimpleXMLElement($xml_str);

		$courses = [];
		$courses['Date'] = strval($xml->attributes()->Date);
		foreach ($xml->Valute as $item) {

			$courses[strval($item->CharCode)] = [
			    'name' => strval($item->Name),
                'value' => strval($item->Value),
                'nominal' => strval($item->Nominal)
            ];
		}

		file_put_contents(STORAGE."/temp/courses.dat", serialize($courses), LOCK_EX);
	}
}

$courses = @unserialize(file_get_contents(STORAGE."/temp/courses.dat"));

if (!empty($courses['USD'])){

	echo '<b>Курсы валют</b> ('.$courses['Date'].')<br />';
	echo '<b>'.$courses['USD']['nominal'].' '.$courses['USD']['name'].'</b> - '.$courses['USD']['value'].'<br />';
	echo '<b>'.$courses['EUR']['nominal'].' '.$courses['EUR']['name'].'</b> - '.$courses['EUR']['value'].'<br />';
	echo '<b>'.$courses['UAH']['nominal'].' '.$courses['UAH']['name'].'</b> - '.$courses['UAH']['value'].'<br />';

} else {
	show_error('Ошибка! Не удалось загрузить последние курсы валют!');
}