<?php

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/**

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* General user data validation methods

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*

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* @package WooCommerce\Classes

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* @version 2.4.0

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*/

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defined( 'ABSPATH' ) || exit;

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/**

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* Validation class.

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*/

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class WC_Validation {

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/**

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* Validates an email using WordPress native is_email function.

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*

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* @param string $email Email address to validate.

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* @return bool

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*/

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public static function is_email( $email ) {

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return is_email( $email );

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}

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/**

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* Validates a phone number using a regular expression.

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*

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* @param string $phone Phone number to validate.

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* @return bool

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*/

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public static function is_phone( $phone ) {

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if ( 0 < strlen( trim( preg_replace( '/[\s\#0-9_\-\+\/\(\)\.]/', '', $phone ) ) ) ) {

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return false;

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}

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return true;

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}

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/**

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* Checks for a valid postcode.

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*

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* @param string $postcode Postcode to validate.

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* @param string $country Country to validate the postcode for.

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* @return bool

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*/

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public static function is_postcode( $postcode, $country ) {

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if ( strlen( trim( preg_replace( '/[\s\-A-Za-z0-9]/', '', $postcode ) ) ) > 0 ) {

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return false;

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}

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switch ( $country ) {

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case 'AT':

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case 'BE':

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case 'CH':

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case 'HU':

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case 'NO':

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$valid = (bool) preg_match( '/^([0-9]{4})$/', $postcode );

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break;

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case 'BA':

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$valid = (bool) preg_match( '/^([7-8]{1})([0-9]{4})$/', $postcode );

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break;

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case 'BR':

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$valid = (bool) preg_match( '/^([0-9]{5})([-])?([0-9]{3})$/', $postcode );

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break;

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case 'DE':

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$valid = (bool) preg_match( '/^([0]{1}[1-9]{1}|[1-9]{1}[0-9]{1})[0-9]{3}$/', $postcode );

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break;

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case 'DK':

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$valid = (bool) preg_match( '/^(DK-)?([1-24-9]\d{3}|3[0-8]\d{2})$/', $postcode );

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break;

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case 'ES':

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case 'FI':

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case 'EE':

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case 'FR':

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case 'IT':

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$valid = (bool) preg_match( '/^([0-9]{5})$/i', $postcode );

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break;

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case 'GB':

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$valid = self::is_gb_postcode( $postcode );

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break;

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case 'IE':

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$valid = (bool) preg_match( '/([AC-FHKNPRTV-Y]\d{2}|D6W)[0-9AC-FHKNPRTV-Y]{4}/', wc_normalize_postcode( $postcode ) );

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break;

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case 'IN':

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$valid = (bool) preg_match( '/^[1-9]{1}[0-9]{2}\s{0,1}[0-9]{3}$/', $postcode );

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break;

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case 'JP':

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$valid = (bool) preg_match( '/^([0-9]{3})([-]?)([0-9]{4})$/', $postcode );

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break;

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case 'PT':

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$valid = (bool) preg_match( '/^([0-9]{4})([-])([0-9]{3})$/', $postcode );

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break;

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case 'PR':

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case 'US':

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$valid = (bool) preg_match( '/^([0-9]{5})(-[0-9]{4})?$/i', $postcode );

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break;

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case 'CA':

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// CA Postal codes cannot contain D,F,I,O,Q,U and cannot start with W or Z. https://en.wikipedia.org/wiki/Postal_codes_in_Canada#Number_of_possible_postal_codes.

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$valid = (bool) preg_match( '/^([ABCEGHJKLMNPRSTVXY]\d[ABCEGHJKLMNPRSTVWXYZ])([\ ])?(\d[ABCEGHJKLMNPRSTVWXYZ]\d)$/i', $postcode );

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break;

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case 'PL':

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$valid = (bool) preg_match( '/^([0-9]{2})([-])([0-9]{3})$/', $postcode );

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break;

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case 'CZ':

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case 'SE':

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case 'SK':

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$valid = (bool) preg_match( "/^($country-)?([0-9]{3})(\s?)([0-9]{2})$/", $postcode );

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break;

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case 'NL':

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$valid = (bool) preg_match( '/^([1-9][0-9]{3})(\s?)(?!SA|SD|SS)[A-Z]{2}$/i', $postcode );

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break;

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case 'SI':

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$valid = (bool) preg_match( '/^([1-9][0-9]{3})$/', $postcode );

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break;

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case 'LI':

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$valid = (bool) preg_match( '/^(94[8-9][0-9])$/', $postcode );

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break;

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default:

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$valid = true;

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break;

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}

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return apply_filters( 'woocommerce_validate_postcode', $valid, $postcode, $country );

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}

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/**

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* Check if is a GB postcode.

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*

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* @param string $to_check A postcode.

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* @return bool

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*/

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public static function is_gb_postcode( $to_check ) {

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// Permitted letters depend upon their position in the postcode.

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// https://en.wikipedia.org/wiki/Postcodes_in_the_United_Kingdom#Validation.

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$alpha1 = '[abcdefghijklmnoprstuwyz]'; // Character 1.

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$alpha2 = '[abcdefghklmnopqrstuvwxy]'; // Character 2.

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$alpha3 = '[abcdefghjkpstuw]'; // Character 3 == ABCDEFGHJKPSTUW.

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$alpha4 = '[abehmnprvwxy]'; // Character 4 == ABEHMNPRVWXY.

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$alpha5 = '[abdefghjlnpqrstuwxyz]'; // Character 5 != CIKMOV.

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$pcexp = array();

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// Expression for postcodes: AN NAA, ANN NAA, AAN NAA, and AANN NAA.

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$pcexp[0] = '/^(' . $alpha1 . '{1}' . $alpha2 . '{0,1}[0-9]{1,2})([0-9]{1}' . $alpha5 . '{2})$/';

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// Expression for postcodes: ANA NAA.

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$pcexp[1] = '/^(' . $alpha1 . '{1}[0-9]{1}' . $alpha3 . '{1})([0-9]{1}' . $alpha5 . '{2})$/';

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// Expression for postcodes: AANA NAA.

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$pcexp[2] = '/^(' . $alpha1 . '{1}' . $alpha2 . '[0-9]{1}' . $alpha4 . ')([0-9]{1}' . $alpha5 . '{2})$/';

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// Exception for the special postcode GIR 0AA.

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$pcexp[3] = '/^(gir)(0aa)$/';

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// Standard BFPO numbers.

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$pcexp[4] = '/^(bfpo)([0-9]{1,4})$/';

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// c/o BFPO numbers.

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$pcexp[5] = '/^(bfpo)(c\/o[0-9]{1,3})$/';

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// Load up the string to check, converting into lowercase and removing spaces.

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$postcode = strtolower( $to_check );

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$postcode = str_replace( ' ', '', $postcode );

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// Assume we are not going to find a valid postcode.

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$valid = false;

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// Check the string against the six types of postcodes.

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foreach ( $pcexp as $regexp ) {

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if ( preg_match( $regexp, $postcode, $matches ) ) {

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// Remember that we have found that the code is valid and break from loop.

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$valid = true;

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break;

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}

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}

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return $valid;

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}

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/**

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* Format the postcode according to the country and length of the postcode.

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*

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* @param string $postcode Postcode to format.

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* @param string $country Country to format the postcode for.

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* @return string Formatted postcode.

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*/

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public static function format_postcode( $postcode, $country ) {

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return wc_format_postcode( $postcode, $country );

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}

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/**

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* Format a given phone number.

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*

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* @param mixed $tel Phone number to format.

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* @return string

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*/

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public static function format_phone( $tel ) {

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return wc_format_phone_number( $tel );

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}

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}

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