Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

I currently have the following for some mandatory fields:

$Mandatory_Fields="*Customer Name*Customer Email*Phone Number*Payment +Method*BillingAddressLine1*BillingCity*BillingPostCode*CardStartDate* +CardIssueNo*CardSecurityCode";
Idealy I would like to make the CardStartDate, CardIssueNo and CardSecurityCode only mandatory if credit card as a payment method is selected. Is there anything like an immediate if I could place in there to only make these mandatory if a radio button is true? I hope I have explained this clearly. Thanks as always. Simon