PHP生成zip压缩包 解决中文不能压缩或者乱码问题

$file = "测试.txt";

/*$fileList = array(
    "111.xlsx",
    "222.txt"
);*/

$filename = "test.zip";

$zip = new ZipArchive();

$zip->open($filename,ZipArchive::CREATE);   //打开压缩包

$con = file_get_contents(iconv('utf-8', 'gbk', $file));

//$zip->addFile($file,basename($file));

$zip->addFromString( iconv('utf-8', 'gbk', $file), $con);//中文使用这个    

/* foreach($fileList as $file){
    $zip->addFile($file,basename($file));   //向压缩包中添加文件
} */

$zip->close();  //关闭压缩包