How to zip and upload files?

PHP has built in zip support, check out http://php.net/manual/en/zip.examples.php for usage and examples. It does support passwords as well: http://php.net/manual/en/ziparchive.setpassword.php

@dfaux you are right about that but it doesnt allow you to password protect archives only decompress password protected archives.

"This function only sets the password to be used to decompress the archive; it does not turn a non-password-protected ZipArchive into a password-protected ZipArchive."

I have this which is working i think except when i try to upload it now.

    public function uploadfile(Request $request, Filesystem $filesystem)
    {
        $newname = str_random(32);
        $password = str_random(20);
        $file = Input::file('file');
        shell_exec('7z a -p ' . $password . ' -r ' . '/home/ubuntu/temp/' . $newname . '.7z ' . $file);
        $newpath = "/home/ubuntu/temp/" . $newname . ".7z";
        $filesystem->put('/downloads/malware/' . $newname . ".7z", file_get_contents($newpath));
        $filesystem->setVisibility('/downloads/malware/' . $newname . ".7z", 'public');
        return redirect()->back();
    }

I get this issue http://cl.ly/image/3M3L3o1B2i3E

Does the /home/ubuntu/temp folder exist and does www-data have access to the folder? You could use a folder within the storage directory to do this as well:

if( ! is_dir(storage_path('temp'))
{
    mkdir(storage_path('temp'));
}

$newname = str_random(32);
$password = str_random(20);
$newpath = storage_path("temp/{$newname}.7z ");
$file = Input::file('file');

shell_exec('7z a -p ' . $password . ' -r ' . $newpath . $file);

$filesystem->put('/downloads/malware/' . $newname . ".7z", file_get_contents($newpath));
$filesystem->setVisibility('/downloads/malware/' . $newname . ".7z", 'public');
return redirect()->back();