ZipStream-PHP: Resulting Zip can't be extracted in Mac OSX Archive Utility and Windows WinRAR

I’m using Zipstream to create a streamed zip download to browser in a Symfony 2.8 + PHP 7 on Ubuntu web application. Files are streamed from AWS s3 bucket via aws-sdk-php which I used to create an S3Client with valid credentials against which I register the stream wrapper (s3Client->registerStreamWrapper()😉.

In web interface, user clicks “Download” button which initiates the above and a zip downloads via browser to user’s local machine. However, the zip cannot be opened by:

• Archive Utility (native app) on Mac OSX (El Capitan) with error "Unable to extract ‘test.zip’. Error 2 No such file or directory.)
• WinRAR on Windows with error “Archive is corrupted”.

I can open the file via 7-zip on Windows and TheUnarchiver on Mac, but this is not a suitable solution as users can’t be expected to guess or know to download a specific third party archive application to make a downloaded zip file usable.

I have seen a previous issue related to this from a few years ago requiring other third party bundles be updated and a related SO post (https://stackoverflow.com/questions/5573211/dynamically-created-zip-files-by-zipstream-in-php-wont-open-in-osx) dealing with the same issue back in 2011. I have updated my bundles and attempted the suggestions in that SO post to fix the issue without success.

Sample Code:

    //$s3Client instantiated with valid credentials and passed to function 
    $this->s3Client = $s3Client;  
    $this->s3Client->registerStreamWrapper();

$opt = array(
            'comment' => 'test zip file.',
            'content_type' => 'application/octet-stream'
          );
    $zip = new ZipStream\ZipStream($filename, $opt);

/*
    simple case with simple test file.
 */

    $keys = array(
          "zipsimpletestfolder/file1.txt"
      );

    foreach ($keys as $key) {
        // Get the file name in S3 key so we can save it to the zip file 
        // using the same name.
        $fileName = basename($key);

        $bucket = 'mg-test';

        $s3path = "s3://" . $bucket . "/" . $key;

        if ($streamRead = fopen($s3path, 'r')) {
          $zip->addFileFromStream($fileName, $streamRead);        
        } else {
          die('Could not open stream for reading');
        }
    }

In ZipStream class I see the following version settings for making and extract:

   ...

   // build file header
		$fields = array( // (from V.A of APPNOTE.TXT)
			array(
				'V',
				0x04034b50
			), // local file header signature
			array(
				'v',				
				0x000A //(6 << 8) + 3)
			), // version needed to extract
			//FIXED as mentioned in http://linlog.skepticats.com/entries/2012/02/Streaming_ZIP_files_in_PHP.php
			//and http://stackoverflow.com/questions/5573211/dynamically-created-zip-files-by-zipstream-in-php-wont-open-in-osx

  ...

Can you please assist with solving this issue?