View file engine/classes/files.class.php

<?
/*
 * Класс для работы с файлами
*/
class files {

    //Функция скачивание файлов
    public function downloadFile($filename, $name, $mimetype = 'application/octet-stream') 
        { 
            if (!file_exists($filename)) 
                die('Файл не найден'); 
            $from = $to = 0; 
            $cr = null; 
            if (isset($_SERVER['HTTP_RANGE'])) { 
                $range = substr($_SERVER['HTTP_RANGE'], strpos($_SERVER['HTTP_RANGE'], '=') + 1); 
                $from = strtok($range, '-'); 
                $to = strtok('/'); 
                if ($to > 0) 
                    ++$to; 
                if ($to) 
                    $to -= $from; 
                header('HTTP/1.1 206 Partial Content'); 
                $cr = 'Content-Range: bytes ' . $from . '-' . (($to) ? ($to . '/' . $to + 1) : 
                    filesize($filename)); 
            } else 
                header('HTTP/1.1 200 Ok'); 
            $etag = md5($filename); 
            $etag = substr($etag, 0, 8) . '-' . substr($etag, 8, 7) . '-' . substr($etag, 15, 
                8); 
            header('ETag: "' . $etag . '"'); 
            header('Accept-Ranges: bytes'); 
            header('Content-Length: ' . (filesize($filename) - $to + $from)); 
            if ($cr) 
                header($cr); 
            header('Connection: close'); 
            header('Content-Type: ' . $mimetype); 
            header('Last-Modified: ' . gmdate('r', filemtime($filename))); 
            $f = fopen($filename, 'r'); 
            header('Content-Disposition: attachment; filename="' . $name . '";'); 
            if ($from) 
                fseek($f, $from, SEEK_SET); 
            if (!isset($to) or empty($to)) { 
                $size = filesize($filename) - $from; 
            } else { 
                $size = $to; 
            } 
            $downloaded = 0; 
            while (!feof($f) and !connection_status() and ($downloaded < $size)) { 
                echo fread($f, 512000); 
                $downloaded += 512000; 
                ob_flush(); 
                flush(); 
            } 
            fclose($f); 
        } 



}



?>