zip stream looping issue

Before I look into this further, can someone confirm that fopen on a zip
stream should return something other than a null?

I've a zip called test.zip which contains 5 files,
a.txt,b.txt,c.txt,d.txt and yes, e.txt

The zip is valid and can be unzipped using unzip on linux.

Running the following code returns a null for each of the pointers reads
the first and 2nd files and finally loops somewhere in the fgets code at
100% cpu at the end of b.txt:-

$names=array('a.txt',

'b.txt',

'c.txt',

'd.txt',

'e.txt');

foreach($names as $name)

    {

    $fp=fopen('zip:///tmp/test.zip#'.$name,'r');

    echo $name.':'.var_export($fp)."\n";

    while(!feof($fp))

            {

            $r=fgets($fp);

            echo '.';

            };

    fclose($fp);

    };

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