PHP unzip file on the site

Question

When users want to unzip files on my PHP site(hosting uses Ubuntu 16.04), it works for Linux or MAC users, but does not work for Windows users and just upload zip file without unpacking. I used these solutions:

echo exec("unzip $file_name ",$result, $returnval );
or
$zip = new ZipArchive; $res = $zip->open($file_name); $zip->extractTo($dir); $zip->close();

and also tested PclZip library
$archive = new PclZip($file_name); $result = $archive->extract(PCLZIP_OPT_PATH, $dir);

Answer 1

Solved! Windows and Linux browsers send different file type: $_FILES['file']['type'] In Linux browser it is "application/zip", but in windows 'application/x-zip-compressed' I use condition where I check file type. Thanks all who tried to help me.