Description:
------------
cant change current working directory into phar package file

Test script:
---------------
<?php


$p = new Phar('test.tar.phar');

$p['index.php'] = '<?php var_dump(__DIR__); echo "\\n"; var_dump(chdir(__DIR__)); ?>';

include 'phar://test.tar.phar/index.php';





Expected result:
----------------
string(50) "phar:///mnt/md1/www/htdocs/test/phar/test.tar.phar"

bool(true)


Actual result:
--------------
string(50) "phar:///mnt/md1/www/htdocs/test/phar/test.tar.phar"

<br />
<b>Warning</b>:  chdir() [<a href='function.chdir'>function.chdir</a>]: No such file or directory (errno 2) in <b>phar:///mnt/md1/www/htdocs/test/phar/test.tar.phar/indxed.php</b> on line <b>1</b><br />
bool(false)