md5() is a one-way encryption algorithm.  So once they are encrypted, you cannot 
decrypt them.  Just look at the md5() function on the php website.  It has what you 
need to do.  Of course if you eventually need these back
in the clear, then md5 would not be a solution.

Chris Payne wrote:

> Hi there everyone,
> I have to store some CC details in a database which are inputted from a form, is 
> MD5() the best way to secure the data?  If so, how do I view MD5() data after it has 
> been inserted?  Any good MD5() tutorials out there?
> Thanks for your help :-)
> Regards
> Chris

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