如何使用PHP与又拍云API实现文件的分片上传和断点续传的功能

require_once('upyun-php-sdk/vendor/autoload.php');
use UpyunUpyun;

$upyun = new Upyun('your_bucket', 'your_operator', 'your_password');

$filePath = 'your_file_path';
$fileName = 'your_file_name';
$response = $upyun->writeFile('/' . $fileName, file_get_contents($filePath));

$bucket = 'your_bucket';
$operator = 'your_operator';
$password = 'your_password';
$client = new Upyun($bucket, $operator, $password);

$filePath = 'your_file_path';
$savePath = 'your_save_path';
$fileName = 'your_file_name';
$fileHash = md5_file($filePath);

$response = $client->headFile('/' . $fileName);
if ($response['statusCode'] == 404) {
    // 文件不存在，重新上传
    uploadFile($client, $filePath, $fileName, $savePath);
} else {
    // 文件已存在，检查完整性
    if ($fileHash != $response['x-upyun-file-md5']) {
        // 文件不完整，进行断点续传
        $range = getRange($response);
        uploadFile($client, $filePath, $fileName, $savePath, $range);
    } else {
        // 文件完整，无需上传
        echo "文件已存在，无需上传";
    }
}

function uploadFile($client, $filePath, $fileName, $savePath, $range = '')
{
    $fileSize = filesize($filePath);

    if ($range) {
        list($offset, $limit) = explode('-', $range);
        $offset = intval($offset);
        $limit = intval($limit);
        $file = fopen($filePath, 'rb');
        fseek($file, $offset);
        $fileContent = fread($file, $limit - $offset + 1);
        fclose($file);
    } else {
        $fileContent = file_get_contents($filePath);
    }

    $response = $client->writeFile('/' . $savePath . '/' . $fileName, $fileContent, true); // 分片上传需要设置为 true
    if ($response['statusCode'] == 200) {
        echo "文件上传成功";
    } else {
        echo "文件上传失败";
    }
}