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Australian post code validation

Thread began 5/10/2012 7:43 am by CraigR | Last modified 3/27/2014 3:24 pm by CraigR | 3068 views | 6 replies

CraigRBeta Tester

Australian (& New Zealand) post code validation

On my checkout form, I have zip code server validation set to allow 5 & 9 digit US, 6 digit canadian and UK post code, however a potential Australian customer was recently unable to check out as the 4 digit aussie postcode was not permitted.

Doesn't appear as an option in the server behavior interface, is there a way to enable this without allowing for blank entry ?

I had a play with the validation function (as below) adding $anz as an extra parameter, but still can't get it to work

function WAValidateZCNew($value,$us5,$us9,$can6,$uk,$anz,$required,$number)  {
$WAFV_ErrorMessage = "";
$isValid = true;
$allowed = "() -.\n\r";
$charVal = "";
if (!(!$required && $value=="")) {
$newVal = "";
$hasLetters = false;
for ($x=0; $x < strlen($value); $x++) {
$z = substr($value, $x, 1);
if (($z >= "0") && ($z <= "9")) {
$newVal .= $z;
$charVal .= "N";
else if (($uk || $can6) && ((($z >= "a") && ($z <= "z")) || (($z >= "A") && ($z <= "Z")))) {
$charVal .= "A";
$hasLetters = true;
else if (strpos($allowed, $z) < 0 || $x == 0 || $x == strlen($value)-1) {
$isValid = false;
$acceptPattern = ",";
if ($anz) {
$acceptPattern .= "NNNN,";
if ($us5) {
$acceptPattern .= "NNNNN,";
if ($us9) {
$acceptPattern .= "NNNNNNNNN,";
if ($uk) {
if ($can6) {
$acceptPattern .= "ANANAN,";
if (strpos($acceptPattern,",".$charVal.",") === false)
$isValid = false;
if ($isValid && !$hasLetters && ($us5 || $us9 || $anz)) {
if ($anz) {
$isValid = preg_match('/^\d{4}$/', $value);
if ($us5) {
$isValid = preg_match('/^\d{5}$/', $value);
if ($us9 && (($us5 && !$isValid) || !$us5)) {
$isValid = (preg_match('/^\d{5}[-\. ]\d{4}$/', $value) || preg_match('/^\d{9}$/', $value));
if (!$isValid) {
$WAFV_ErrorMessage .= ",".$number;
return $WAFV_ErrorMessage;

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