php 文件上传至OSS及删除远程阿里云OSS文件

<?php
include './aliyun-oss-php-sdk-2.4.2/autoload.php';
 
use OSS\OssClient;
use OSS\Core\OssException;
 
error_reporting(E_ALL);
ini_set('display_errors', 1); //错误信息
ini_set('display_startup_errors', 1); //php启动错误信息
session_start();
/**
 * 取小数点后两位
 * @param type $str 带小数的数字
 * @return type     返回准确截取两位的小数
 */
 
function num_format($str) {
    if (strpos($str, '.') === false) {
        return $str;
    }
    $retArr = explode(".", $str);
    $strs = substr($retArr[1], 0, 2);
    return $retArr[0] . "." . $strs;
}
 
function create_folders($dir) {
    return is_dir($dir) or ( create_folders(dirname($dir)) and mkdir(iconv("UTF-8", "GBK", $dir), 0777, true));
}
$file = $_FILES['file'];
 
$accessKeyId = '';//RAM alioss后台能拿到
$accessKeySecret = '';//RAM alioss后台能拿到
$endpoint = 'oss-cn-beijing.aliyuncs.com';//alioss后台 概览可以拿到
$bucket = 'planet-cross';//创建的组，随便吧创建，权限正常就行
echo '<pre>';
var_dump($_SESSION);
if ($file) {
    $filename = "/upload/image/" . date("Ymd");
    if (!file_exists("." . $filename)) {
        create_folders("." . $filename);
    }
//获取后缀
    $ary = explode('.', $file['name']);
    $su = end($ary);
//文件名
    $filenames = $filename . "/" . time() . rand(1, 10000) . "." . $su;
    move_uploaded_file($file['tmp_name'], "." . $filenames);
 
    $ossClient = new \OSS\OssClient($accessKeyId, $accessKeySecret, $endpoint);
    $filenames = ltrim($filenames, '/'); //去除 第一个 '/'
// 开始上传
    $pic = $filenames;
    try {
        $oss = $ossClient->uploadFile($bucket, $pic, $filenames);
        $filenames = $oss['info']['url'];
        $_SESSION['file']=$filenames;
        echo $filenames;
        echo '<img src="JyAuICRmaWxlbmFtZXMgLiA="" />';
        //删除本地文件
    } catch (\OSS\Core\OssException $e) {
        die("Failed to upload file ");
        return false;
    }
} else if(!empty($_SESSION['file'])){
    try {
        $patch=trim(parse_url($_SESSION['file'])['path'],'/');
        $ossClient = new \OSS\OssClient($accessKeyId, $accessKeySecret, $endpoint);
        $oss=$ossClient->deleteObject($bucket,$patch);
        $_SESSION['file']=null;
    } catch (OssException $e) {
        printf(__FUNCTION__ . ": FAILED\n");
        printf($e->getMessage() . "\n");
        return;
    }
}
 
 
    /**
     * 删除文件
     * 可以删除调用ajaxfile上传的文件
     * @param type $path_file   文件路径
     * 删除的时候记住不要带域名 也不要带  / 这个路径符号
     */
    function delfile($path_file) {
        if (config('config.OSS_OPEN')) {
            try {
                // 删除的时候记住不要带域名，也不要带'/'这个路径符号，如全路径是：'https://hxty.oss-cn-beijing.aliyuncs.com/data/pdf/contract/2021-06-16/HXSHB21061611594482340c.pdf'，则这里的path_file路径为：'data/pdf/contract/2021-06-16/HXSHB21061611594482340c.pdf'。
                $path_file=trim(parse_url($path_file)['path'],'/');//去掉域名,
                $ossClient = new \OSS\OssClient(config('config.OSS_KEY'), config('config.OSS_SECRET'), config('config.OSS_ENDPOINT'));
                $ossClient->deleteObject(config('config.OSS_BUCKET'), $path_file);
            } catch (OssException $e) {
                printf(__FUNCTION__ . ": FAILED\n");
                printf($e->getMessage() . "\n");
                return;
            }
        } else {
            $val2 = "." . $path_file;
            if (file_exists($val2)) {
                $unlinkfilename = trim($path_file, "/");
                unlink($unlinkfilename);
            }
        }
    }