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Which PHP function can I use to do encryption and decryption of a password? It should be unique and reversible.
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md5 may also work for you.
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Why does everyone want to be able to reverse passwords? One way encryption is all that is necessary, because there is never ever ever EVER a reason that you need to know another user's password. All you do by trying to have that functionality is set yourself up to be in a position of liability in the event that your data is compromised because of your insecure practices.
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