[PHP] Payflo Pro and credit cards

[Tobias Talltorp]

I have a few questions regarding credit cards and the Payflo Pro function in
PHP.
Currently I only need to check that the creditcard is valid, no actual
payment is needed right now.

1)
How do I perform this check against Payflo Pro?

2)
How and where should I save the credit card numbers? In a file outside the
webroot that I can crypt, in a database that I can crypt (can MySQL do
this)?

Thanks in advance,
// Tobias Talltorp