Description:
------------
Sounds like a tabloid leader, but...

Basically you can't work with entry file contents from a third-party zip archive at present, at all. Not only can you not var_dump(file_get_contents()), it's also not possible to convert a third-party zip archive to executable for the same reason - 'internal corruption' is reported in both cases. It seems that entry contents aren't being copied across in phar_open_entry_fp() when it comes to zip archives.

Reproduce code:
---------------
<?php
/* adapted version of tests/zip/unixzip.phpt */

$a = new PharData(dirname(__FILE__) . '/files/zip.zip');

foreach ($a as $b) {
	if ($b->isDir()) {
		echo "dir " . $b->getPathName() . "\n";
	} else {
		echo $b->getPathName() . "\n";
		echo file_get_contents($b) . "\n";
	}
}

if (isset($a['notempty/hi.txt'])) {
	echo $a['notempty/hi.txt']->getPathName() . "\n";
}

?>

Expected result:
----------------
dir phar://%szip.zip%cempty
phar://%szip.zip%chi.txt
hi there
dir phar://%szip.zip%cnotempty
phar://%szip.zip/notempty/hi.txt

Actual result:
--------------
dir phar://C:/sandbox/php5/ext/phar/tests/zip/files/zip.zip\empty
phar://C:/sandbox/php5/ext/phar/tests/zip/files/zip.zip\hi.txt

Warning: file_get_contents(phar://C:/sandbox/php5/ext/phar/tests/zip/files/zip.zip\hi.txt): failed to open stream: phar error: internal corruption of phar "C:/sandbox/php5/ext/phar/tests/zip/files/zip.zip" (crc32 mismatch on file "hi.txt") in C:\sandbox\php5\ext\phar\tests\zip\unixzip.php on line 8

dir phar://C:/sandbox/php5/ext/phar/tests/zip/files/zip.zip\notempty
phar://C:/sandbox/php5/ext/phar/tests/zip/files/zip.zip/notempty/hi.txt