Detect base64 encoding in PHP?

Posted by Ian Silber on Stack Overflow See other posts from Stack Overflow or by Ian Silber
Published on 2010-03-31T20:45:45Z Indexed on 2010/03/31 20:53 UTC
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php

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base64

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encode

Is there some way to detect if a string has been base64_encoded() in PHP?

We're converting some storage from plain text to base64 and part of it lives in a cookie that needs to be updated. I'd like to reset their cookie if the text has not yet been encoded, otherwise leave it alone.

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