MySQL Conference & Expo 2007, April 23-27

It’s going to be good, just look at the schedule! If you’re not signed up yet, why? Just ask yourself that. And if you don’t have a very good reason, just register and go meet lots of other MySQL users as well as many of my colleagues. It’s educational (which means you can [...]

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Filed under: Uncategorized | by arjen
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Lunn algorithm (credit card number check)

Andrew Dashin wrote about this. Basically, the function verifies whether a credit card number could be valid, using the number’s internal checksum algorithm.
I had the C code from long ago, and I think I even converted it to PHP at some point. It’s out there and it’s no secret (try googling for the Lunn algorithm). [...]

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Filed under: Uncategorized | by arjen
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