function custom_read4($file_path, $file_name)
{
// Close the session (helpful for long downloads
@session_write_close();
// set output compression
if (function_exists('apache_setenv')) {
@apache_setenv('no-gzip', 1);
}
@ini_set('zlib.output_compression', 0);
ob_end_clean();
// End automatic output buffering
$size = eStore_dlfilepath::dl_filesize($file_path);
header("Pragma: public");
header("Cache-Control: maxage=1");
header("Content-type: application/octet-stream");
header("Content-Disposition: attachment; filename=\"" . $file_name . "\"");
header("Content-Description: eStore Download");
// Handle resumable downloads
if (isset($_SERVER['HTTP_RANGE'])) {
list($units, $reqrange) = explode('=', $_SERVER['HTTP_RANGE'], 2);
if ($units == 'bytes') {
// Use first range - http://tools.ietf.org/id/draft-ietf-http-range-retrieval-00.txt
list($range, $extra) = explode(',', $reqrange, 2);
} else {
$range = '';
}
} else {
$range = '';
}
// Determine download chunk to grab
list($start, $end) = explode('-', $range, 2);
// Set start and end based on range (if set), or set defaults
// also check for invalid ranges.
$end = empty($end) ? $size - 1 : min(abs(intval($end)), $size - 1);
$start = empty($start) || $end < abs(intval($start)) ? 0 : max(abs(intval($start)), 0);
// Only send partial content header if downloading a piece of the file (IE workaround)
if ($start > 0 || $end < $size - 1) {
header('HTTP/1.1 206 Partial Content');
}
header('Accept-Ranges: bytes');
header('Content-Range: bytes ' . $start . '-' . $end . '/' . $size);
header('Content-length: ' . ($end - $start + 1));
$file = fopen($file_path, 'rb');
fseek($file, $start);
$packet = 1024 * 1024;
while (!feof($file)) {
if (connection_status() !== 0) {
return false;
}
$buffer = fread($file, $packet);
if (!empty($buffer)) {
echo $buffer;
}
ob_flush();
flush();
}
fclose($file);
return true;
}
