php Programming Glossary: checksums

http://stackoverflow.com/questions/1418964/generating-luhn-checksums

There are lots of implementations for validating Luhn checksums but very few for generating them. I've come across this one.. made this function that supposedly should generated Luhn checksums but for some reason that I haven't yet understood the generated.. some reason that I haven't yet understood the generated checksums are invalid half of the time. function Luhn number iterations..

What is the best way to validate a credit card in PHP?

http://stackoverflow.com/questions/174730/what-is-the-best-way-to-validate-a-credit-card-in-php

of prefixes Checksum Most cards use the Luhn algorithm for checksums Luhn Algorithm described on Wikipedia There are links to many..

Hiding PHP's X-Powered-By header

http://stackoverflow.com/questions/2318806/hiding-phps-x-powered-by-header

to have the PHP version. I also know by appending some checksums you can get access to PHP's credits and some random images more..

Do you have health checks in your web app or web site? [closed]

http://stackoverflow.com/questions/2405825/do-you-have-health-checks-in-your-web-app-or-web-site

fully no PHP errors Do the project's libraries' MD5 checksums match the original ones Does the front page's output pass the..