Description:
------------
---
From manual page: http://www.php.net/function.zip-entry-read#refsect1-
function.zip-entry-read-returnvalues
---
The function is documented as returning FALSE if the end of the file is reached.  
However, this never happens: it returns a 0-length string instead.

Observed on CentOS 6.4 and reproducible on:
PHP 5.4.15 (cli) (built: May 22 2013 14:14:09)
PHP 5.3.25 (cli) (built: May 22 2013 14:11:27)

Test script:
---------------
<?php
// Building the zip. This is not expected to work on Windows:
file_put_contents("entry.txt", "abc\nxyz\n");
system("zip -9 file.zip entry.txt");

// With the suitably constructed zip file:
$zh = zip_open('file.zip');
$zeh = zip_read($zh);
zip_entry_open($zh, $zeh);
$ebrake = 8;
while (($part = zip_entry_read($zeh)) !== false && --$ebrake)
  echo "processing part <", trim(preg_replace('/\\s+/', ' ', $part)), ">\n";
?>

Expected result:
----------------
processing part <abc xyz>

Actual result:
--------------
processing part <abc xyz>
processing part <>
processing part <>
processing part <>
processing part <>
processing part <>
processing part <>