This is a short WTF post about this article on ehow which contains insanely bad advice that I thought must be a joke when I saw this tweet:
base64_encode($credit_card_number); pic.twitter.com/ETRrmn0RYM
— Jan Lehnardt (@janl) September 21, 2014
For anyone that doesn't know Base64 is not encryption and it does nothing to protect your secrets it is just a way of converting binary data into characters that can be safely included in email and other places not expecting binary data that can then be converted back at the other side.