Posted By

aristoworks on 07/01/08

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/ Published in: PHP

This is a simple method of validating a 9-digit zip code using PHP and regular expressions

Copy this code and paste it in your HTML

$string = "12345-1234";
if (preg_match('/^[0-9]{5}([- ]?[0-9]{4})?$/', $string)) { 
echo "zip code checks out";
}

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