PostCode.php

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<?php
#require_once 'Zend/Validate/Abstract.php';

#require_once 'Zend/Locale/Format.php';

class Zend_Validate_PostCode extends Zend_Validate_Abstract
{
    const INVALID  = 'postcodeInvalid';
    const NO_MATCH = 'postcodeNoMatch';

    protected $_messageTemplates = array(
        self::INVALID  => "Invalid type given. String or integer expected",
        self::NO_MATCH => "'%value%' does not appear to be a postal code",
    );

    protected $_locale;

    protected $_format;

    public function __construct($options = null)
    {
        if ($options instanceof Zend_Config) {
            $options = $options->toArray();
        }

        if (empty($options)) {
            #require_once 'Zend/Registry.php';
            if (Zend_Registry::isRegistered('Zend_Locale')) {
                $this->setLocale(Zend_Registry::get('Zend_Locale'));
            }
        } elseif (is_array($options)) {
            // Received
            if (array_key_exists('locale', $options)) {
                $this->setLocale($options['locale']);
            }

            if (array_key_exists('format', $options)) {
                $this->setFormat($options['format']);
            }
        } elseif ($options instanceof Zend_Locale || is_string($options)) {
            // Received Locale object or string locale
            $this->setLocale($options);
        }

        $format = $this->getFormat();
        if (empty($format)) {
            #require_once 'Zend/Validate/Exception.php';
            throw new Zend_Validate_Exception("A postcode-format string has to be given for validation");
        }
    }

    public function getLocale()
    {
        return $this->_locale;
    }

    public function setLocale($locale = null)
    {
        #require_once 'Zend/Locale.php';
        $this->_locale = Zend_Locale::findLocale($locale);
        $locale        = new Zend_Locale($this->_locale);
        $region        = $locale->getRegion();
        if (empty($region)) {
            #require_once 'Zend/Validate/Exception.php';
            throw new Zend_Validate_Exception("Unable to detect a region for the locale '$locale'");
        }

        $format = Zend_Locale::getTranslation(
            $locale->getRegion(),
            'postaltoterritory',
            $this->_locale
        );

        if (empty($format)) {
            #require_once 'Zend/Validate/Exception.php';
            throw new Zend_Validate_Exception("Unable to detect a postcode format for the region '{$locale->getRegion()}'");
        }

        $this->setFormat($format);
        return $this;
    }

    public function getFormat()
    {
        return $this->_format;
    }

    public function setFormat($format)
    {
        if (empty($format) || !is_string($format)) {
            #require_once 'Zend/Validate/Exception.php';
            throw new Zend_Validate_Exception("A postcode-format string has to be given for validation");
        }

        if ($format[0] !== '/') {
            $format = '/^' . $format;
        }

        if ($format[strlen($format) - 1] !== '/') {
            $format .= '$/';
        }

        $this->_format = $format;
        return $this;
    }

    public function isValid($value)
    {
        $this->_setValue($value);
        if (!is_string($value) && !is_int($value)) {
            $this->_error(self::INVALID);
            return false;
        }

        $format = $this->getFormat();
        if (!preg_match($format, $value)) {
            $this->_error(self::NO_MATCH);
            return false;
        }

        return true;
    }
}