php批量网络文件打包zip + 下载完成后删除文件

<?php
class PackZip
{
    /**
     * @param $tmpDir  临时目录
     * @param $fileList 文件列表
     * @param $packName 打包后的文件名
     */
    public static function packFile($tmpDir,$fileList,$packName){

        $path = rtrim($tmpDir,'/').'/'.$packName.'/';
        if(!is_dir($path)){
            mkdir($path,0777,true);
        }
        $localFile = [];
        foreach ($fileList as $k=>$v){
            $filename = $v['name'].'.'.pathinfo($v['path'],PATHINFO_EXTENSION);
            $localOne = self::netFile2LocalFile($v['path'],$path.$filename);
            if($localOne){
                $localFile[] = $localOne;
            }
        }
        if($localFile){
            // 压缩
            $zipname = self::getZipName($tmpDir,$packName);
            $zip = new \ZipArchive;
            $zip->open($zipname,\ZipArchive::CREATE);
            foreach ($localFile as $file) {
                $localPath = pathinfo($file,PATHINFO_FILENAME).'.'.pathinfo($file,PATHINFO_EXTENSION);
                $zip->addFile($file,$localPath);
            }
            $zip->close();
            return $zipname;
        }else{
            return false;
        }
    }

    public static function getZipName($tmpDir,$packName){
        return rtrim($tmpDir,'/').'/'.$packName.'.zip';
    }

    public static function delTempFile($tmpDir,$packName){
            $dir = rtrim($tmpDir,'/').'/'.$packName.'/';
            $zipname =  $zipname = self::getZipName($tmpDir,$packName);
            if(is_file($zipname)){
                @unlink($zipname);
            }

            if(is_dir($dir)){
                $result = scandir($dir);
                foreach ($result as $k=>$v){
                    if($v!='.' && $v!='..'){
                        @unlink($dir.$v);
                    }
                }
                @rmdir($dir);
            }
    }

    /**
     * 网络文件路径转换为本地文件路径
     * @param $fileUrl 网络文件路径
     * @param $filePath 本地文件路径
     */
    private static function netFile2LocalFile($fileUrl,$filePath){
        if((strpos($fileUrl,'http://')!==false) || (strpos($fileUrl,'https://')!==false)){
            // 网络文件
            $stream_opts = [
                "ssl" => [
                    "verify_peer"=>false,
                    "verify_peer_name"=>false,
                ]
            ];

            $response = file_get_contents($fileUrl, false, stream_context_create($stream_opts));
            file_put_contents($filePath,$response);
            return $filePath;
        }else{
            // 本地文件
            if(is_file($fileUrl)){
                file_put_contents($filePath,file_get_contents($fileUrl));
                return $filePath;
            }
        }
        return null;
    }

}

$zipname='xxxxx/yyyy.zip';
header('Content-Type: application/zip');
header('Content-disposition: attachment; filename='.pathinfo($zipname,PATHINFO_FILENAME).'.zip');
header('Content-Length: '.filesize($zipname));
readfile($zipname);
unlink($zipname);