Description:
------------
Looks like $ZipArchive->addFile() don't see source file, if it placed near the executed script inside PHAR.

Steps:
1. create phar-file with:
- embed.xml with any data;
- index.php with:
~~~~
$objZip = new ZipArchive();
$objZip->open("test.zip", ZIPARCHIVE::CREATE);
$objZip->addFile(dirname(__FILE__) . '/embed.xml', 'test/embed.xml');
$objZip->close();
~~~~

Exp: test.zip with embed.xml
Act: test.zip without embed.xml . addFile() return false;

Test script:
---------------
$objZip = new ZipArchive();
$objZip->open("test.zip", ZIPARCHIVE::CREATE);
$objZip->addFile(dirname(__FILE__) . '/embed.xml', 'test/embed.xml');
$objZip->close();

Expected result:
----------------
test.zip with embed.xml

Actual result:
--------------
test.zip without embed.xml . addFile() return false;