USPS Web Tools for Address Validation, part two

(As noted in part one, this was originally written in 2010 or so, but everything should still apply today.) In Part 1, I walked through the PHP code needed to send and retrieve the XML data the USPS Web Tools API works with. We managed to work our way through the first scripted test you …

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USPS Web Tools for Address Validation, part one

(Note: this was originally written in 2010, to the best of my memory. While some references may be outdated, the code still works, as I’m still using it today.) To use the USPS Web Tools API, you have to sign up and get a user ID and password. This is easy enough to do. Go …

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