Story credit card numbers in database

Hi all,

There is PHP 4.2.3 and MySQL 3.23 installed on my client's web host. The client also has SSL and a shared certificate (currently thinking about buying a private one). How would you suggest that I store the credit cards in the database? The credit cards are only stored for a maximum of 30 days. Since they're not automatically charged online, I cannot hide the number immediately.

Any suggestions?
Thanks,
Max

 

 

 

 

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