hello i need a simple code to save url into file.txt

[tadmeer]

helloi need to log referrer for visitors the links like: http://localhost/hello.php?session=aGVs ... bHBvaW50==


i want to log the url and the (decodded) base64 code: aGVsbG8gZGlnaXRhbHBvaW50== to file.txt or something


so the file.txt will have:


url: http://localhost/hello.php?session=aGVs ... bHBvaW50==
session: aGVsbG8gZGlnaXRhbHBvaW50==
decodded_session: hello digitalpoint


thanks for help me