How to delete files in php oss

<?php
require_once &#39;./aliyun-oss-php-sdk-master/autoload.php&#39;;
header("content-type:text/html;charset=utf-8");
// if (is_file(__DIR__ . &#39;/aliyun-oss-php-sdk-master/autoload.php&#39;)) {
//     require_once __DIR__ . &#39;/aliyun-oss-php-sdk-master/autoload.php&#39;;
// }
if (is_file(__DIR__ . &#39;/aliyun-oss-php-sdk-master/autoload.php&#39;)) {
    require_once __DIR__ . &#39;/aliyun-oss-php-sdk-master/autoload.php&#39;;
}
if (is_file(__DIR__ . &#39;/aliyun-oss-php-sdk-master/vendor/autoload.php&#39;)) {
    require_once __DIR__ . &#39;/aliyun-oss-php-sdk-master/vendor/autoload.php&#39;;
}
use OSS\OssClient;
use OSS\Core\OssException;
// 阿里云主账号AccessKey拥有所有API的访问权限，风险很高。强烈建议您创建并使用RAM账号进行API访问或日常运维，请登录 https://ram.console.aliyun.com 创建RAM账号。
$accessKeyId = "xxxxx";
$accessKeySecret = "xxxxx";
// Endpoint以杭州为例，其它Region请按实际情况填写。
$endpoint = "http://oss-cn-shenzhen.aliyuncs.com";
// 存储空间名称
$bucket = "xxxx";
$ossClient = new OssClient($accessKeyId, $accessKeySecret, $endpoint);
//    判断bucketname是否存在，不存在就去创建
if (!$ossClient->doesBucketExist($bucket)) {
    $ossClient->createBucket($bucket);
}
// 文件名称
$object = $_FILES[&#39;filename&#39;][&#39;name&#39;];
// <yourLocalFile>由本地文件路径加文件名包括后缀组成，例如/users/local/myfile.txt
$filePath = $_FILES[&#39;filename&#39;][&#39;tmp_name&#39;];
try{
    //上传图片
    $ossClient->uploadFile($bucket, $object, $filePath);
    //文件访问权限，设置为所有人可读
    $acl = "public-read";
    $ossClient->putObjectAcl($bucket, $object, $acl);
    echo "<img src =&#39;http://xxxx.oss-cn-shenzhen.aliyuncs.com/".$object."&#39; >";die;
//删除单个文件
//    $ossClient->deleteObjects($bucket, $object);
    //删除多个文件
//    $objects = [&#39;文件名1&#39;,&#39;文件名2&#39;];
//    $ossClient->deleteObjects($bucket, $objects);
    
    } catch(OssException $e) {
    printf(__FUNCTION__ . ": FAILED\n");
    printf($e->getMessage() . "\n");
    return;
}
print(__FUNCTION__ . ": OK" . "\n");