Description:
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This bug is maybe related to http://bugs.php.net/bug.php?id=51952

Your in your httpd.conf configured DOCUMENT_ROOT is "C:\Sites\example.org\htdocs".
But this isn't a folder, it's a symlink/junction to the following folder: 
"C:\Foo".

Now you call "C:\Sites\example.org\htdocs\test.php"

Test script:
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<?php
echo realpath(getcwd());


Expected result:
----------------
C:\Foo

Actual result:
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C:\Sites\example.org\htdocs