Advanced Commands

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Forms Processor Advanced Commands

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cc_check Every credit card number conforms to a pattern which matches the credit card type (MasterCard, Visa, etc.). This function performs a mathematical calculation on a credit card number to see if it is in the correct format of the specified card type. If it does not match, then the either the credit card number or the card type were entered incorrectly in the form.

&cc_check ("cardtype","cardnumber");

cardtype - the type of credit card to be checked, possible values are:
```
Card type		value
-----------------------------
American express	AX
Diner's club		DC
MasterCard		MC
Visa			V
Discover		D
```
Usually the card type is selected from a selection box.
cardnumber - the credit card number to check without spaces or dashes, usually submitted in a form field.
NOTE:
- This function does not charge credit cards or get validation numbers.
- This function returns the value ok rather than a logical one (1).

Example:

# check card number to see if it is 'ok'

if (&cc_check("$card_type","$card_no") ne "ok")

# it's invalid, tell them so

format screen
You submitted an invalid credit card number.
.

else

# it's valid, say so

format screen
You submitted a valid credit card number.
.

endif

See also: Credit Card acceptance form Secure server documentation [an error occurred while processing this directive]