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These functions are included in ccValid.pas:

  • htCreditCardDateCheck -- Validate a string to make sure it contains a valid mm-yyyy date.
  • htCreditCardDateMMYY -- convert CHAR(6) to CHAR(4), check for validity, set error
  • htCreditCardDateReverse -- Return a reversed char(4) date, or blank if not reversible.
  • htCreditCardDateReversible -- Check a credit card date for reversibility.
  • htCreditCardType -- Determine type of credit card based on card number.

Order Credit Card Validation Routines

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