Comments on: USA’s Zip Code Validation in PHP

By: Mathieu Beausoleil

Mathieu Beausoleil — Mon, 19 Oct 2009 18:36:55 +0000

@Tim: Don’t forget to upgrade your database frequently, new Zip Codes are added each week / month

By: What will be validation for Zip code ? - CodeCall Programming Forum

What will be validation for Zip code ? - CodeCall Programming Forum — Wed, 08 Jul 2009 12:46:55 +0000

[...] From: USA's Zip Code Validation in PHP __________________ CodeCall Blog | CodeCall Wiki | Shareware Site | Linux Forum | Write a Blog [...]

By: Tim

Tim — Thu, 04 Jun 2009 06:17:53 +0000

Instead of matching the ZIP code using regular expression, you can download the latest US ZIP code database from the following page for free. You can load the list into a database for real time validation and it is the most accurate method. http://www.zipcodeworld.com/zipcodefree.htm

By: Chris

Chris — Mon, 03 Nov 2008 15:56:19 +0000

But I don’t believe 00000 is a valid zip code, nor is 00123. Basically, a zip code can start with a zero, but if it does, the second digit cannot be zero.

By: smithveg

smithveg — Mon, 21 Jul 2008 07:07:20 +0000

Good, Thank for your quote.
That’s pretty easy to integrate and use.

By: Roshan

Roshan — Mon, 09 Jun 2008 15:44:36 +0000

ya denny you can surely simply the above function like this…

By: Denny

Denny — Mon, 09 Jun 2008 14:05:25 +0000

Why not simplify?

function validateUSAZip($zip_code) {
return preg_match(“/^([0-9]{5})(-[0-9]{4})?$/i”,$zip_code);
}

By: PHP Coding School » Blog Archive » php tips [2008-03-20 18:59:04]

PHP Coding School » Blog Archive » php tips [2008-03-20 18:59:04] — Thu, 20 Mar 2008 19:04:54 +0000

[...] USA’s Zip Code Validation in PHP By Roshan My friend Sushil was trying to write the regular expression for validating the format of the zip code of USA. After spending few minutes, I came to this solution. Roshan Bhattarai’s Blog – PHP… – http://roshanbh.com.np [...]