Resumable Downloads with PHP File Tunneling
When using PHP to stream file downloads, it can be desirable to enable resumable downloads for users. However, the default PHP script setup often prevents downloads from being resumed.
To support resumable downloads with PHP, follow these steps:
Implementing these steps should enable resumable downloads in your PHP file tunneling setup. Here's an example PHP code that demonstrates the process:
$filesize = filesize($file); $offset = 0; $length = $filesize; if (isset($_SERVER['HTTP_RANGE'])) { preg_match('/bytes=(\d+)-(\d+)?/', $_SERVER['HTTP_RANGE'], $matches); $offset = intval($matches[1]); $length = intval($matches[2]) - $offset; } $file = fopen($file, 'r'); fseek($file, $offset); $data = fread($file, $length); fclose($file); if ($partialContent) { header('HTTP/1.1 206 Partial Content'); header('Content-Range: bytes ' . $offset . '-' . ($offset + $length) . '/' . $filesize); } header('Content-Type: ' . $ctype); header('Content-Length: ' . $filesize); header('Content-Disposition: attachment; filename="' . $fileName . '"'); header('Accept-Ranges: bytes'); print($data);
The above is the detailed content of How Can I Implement Resumable Downloads in PHP File Tunneling?. For more information, please follow other related articles on the PHP Chinese website!