Maximum Year in Expiry Date of Credit Card

Question

Various online services have different values for maximum year of expiry, when it comes to Credit Cards.

For instance:

• Basecamp: +15 years (2025)

Answer 1

After reading the OP's upper validity of 20 years for Amazon, I wrote this simple solution in PHP:

    yy
    ".(date('y')+$i)."\n";
    }
    ?>

This has greatly reduced the number of these new-year requests to remove last year from a form.

A leaner version of the loop runs ~twice as quickly:

    yy
    ".substr($i,2)."\n";
    }
    ?>