Best practices to store CreditCard information into DataBase

Question

In my country the online payments are not an old thing, the first time i saw a web application taking payments directly to a local bank account was last year.

So, Im

Answer 1

I suggest you encrypt card numbers with a strong algorithm( similar AES) and a long secret key.

Then,keep your secret key in a secure place similar an external hard or optical disk. When you need to secret key,use external hard.

If you are using a shared host, you have to store your secret key in an external device.

Strict your database

1. Define strict users for your database
2. Remove root user of your database if it is not needed.