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<?php
/**
* General user data validation methods
*
* @package Kkart\Classes
* @version 2.4.0
*/
defined( 'ABSPATH' ) || exit;
/**
* Validation class.
*/
class KKART_Validation {
/**
* Validates an email using WordPress native is_email function.
*
* @param string $email Email address to validate.
* @return bool
*/
public static function is_email( $email ) {
return is_email( $email );
}
/**
* Validates a phone number using a regular expression.
*
* @param string $phone Phone number to validate.
* @return bool
*/
public static function is_phone( $phone ) {
if ( 0 < strlen( trim( preg_replace( '/[\s\#0-9_\-\+\/\(\)\.]/', '', $phone ) ) ) ) {
return false;
}
return true;
}
/**
* Checks for a valid postcode.
*
* @param string $postcode Postcode to validate.
* @param string $country Country to validate the postcode for.
* @return bool
*/
public static function is_postcode( $postcode, $country ) {
if ( strlen( trim( preg_replace( '/[\s\-A-Za-z0-9]/', '', $postcode ) ) ) > 0 ) {
return false;
}
switch ( $country ) {
case 'AT':
$valid = (bool) preg_match( '/^([0-9]{4})$/', $postcode );
break;
case 'BA':
$valid = (bool) preg_match( '/^([7-8]{1})([0-9]{4})$/', $postcode );
break;
case 'BE':
$valid = (bool) preg_match( '/^([0-9]{4})$/i', $postcode );
break;
case 'BR':
$valid = (bool) preg_match( '/^([0-9]{5})([-])?([0-9]{3})$/', $postcode );
break;
case 'CH':
$valid = (bool) preg_match( '/^([0-9]{4})$/i', $postcode );
break;
case 'DE':
$valid = (bool) preg_match( '/^([0]{1}[1-9]{1}|[1-9]{1}[0-9]{1})[0-9]{3}$/', $postcode );
break;
case 'ES':
case 'FR':
case 'IT':
$valid = (bool) preg_match( '/^([0-9]{5})$/i', $postcode );
break;
case 'GB':
$valid = self::is_gb_postcode( $postcode );
break;
case 'HU':
$valid = (bool) preg_match( '/^([0-9]{4})$/i', $postcode );
break;
case 'IE':
$valid = (bool) preg_match( '/([AC-FHKNPRTV-Y]\d{2}|D6W)[0-9AC-FHKNPRTV-Y]{4}/', kkart_normalize_postcode( $postcode ) );
break;
case 'IN':
$valid = (bool) preg_match( '/^[1-9]{1}[0-9]{2}\s{0,1}[0-9]{3}$/', $postcode );
break;
case 'JP':
$valid = (bool) preg_match( '/^([0-9]{3})([-]?)([0-9]{4})$/', $postcode );
break;
case 'PT':
$valid = (bool) preg_match( '/^([0-9]{4})([-])([0-9]{3})$/', $postcode );
break;
case 'PR':
case 'US':
$valid = (bool) preg_match( '/^([0-9]{5})(-[0-9]{4})?$/i', $postcode );
break;
case 'CA':
// 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.
$valid = (bool) preg_match( '/^([ABCEGHJKLMNPRSTVXY]\d[ABCEGHJKLMNPRSTVWXYZ])([\ ])?(\d[ABCEGHJKLMNPRSTVWXYZ]\d)$/i', $postcode );
break;
case 'PL':
$valid = (bool) preg_match( '/^([0-9]{2})([-])([0-9]{3})$/', $postcode );
break;
case 'CZ':
case 'SK':
$valid = (bool) preg_match( '/^([0-9]{3})(\s?)([0-9]{2})$/', $postcode );
break;
case 'NL':
$valid = (bool) preg_match( '/^([1-9][0-9]{3})(\s?)(?!SA|SD|SS)[A-Z]{2}$/i', $postcode );
break;
case 'SI':
$valid = (bool) preg_match( '/^([1-9][0-9]{3})$/', $postcode );
break;
case 'LI':
$valid = (bool) preg_match( '/^(94[8-9][0-9])$/', $postcode );
break;
default:
$valid = true;
break;
}
return apply_filters( 'kkart_validate_postcode', $valid, $postcode, $country );
}
/**
* Check if is a GB postcode.
*
* @param string $to_check A postcode.
* @return bool
*/
public static function is_gb_postcode( $to_check ) {
// Permitted letters depend upon their position in the postcode.
// https://en.wikipedia.org/wiki/Postcodes_in_the_United_Kingdom#Validation.
$alpha1 = '[abcdefghijklmnoprstuwyz]'; // Character 1.
$alpha2 = '[abcdefghklmnopqrstuvwxy]'; // Character 2.
$alpha3 = '[abcdefghjkpstuw]'; // Character 3 == ABCDEFGHJKPSTUW.
$alpha4 = '[abehmnprvwxy]'; // Character 4 == ABEHMNPRVWXY.
$alpha5 = '[abdefghjlnpqrstuwxyz]'; // Character 5 != CIKMOV.
$pcexp = array();
// Expression for postcodes: AN NAA, ANN NAA, AAN NAA, and AANN NAA.
$pcexp[0] = '/^(' . $alpha1 . '{1}' . $alpha2 . '{0,1}[0-9]{1,2})([0-9]{1}' . $alpha5 . '{2})$/';
// Expression for postcodes: ANA NAA.
$pcexp[1] = '/^(' . $alpha1 . '{1}[0-9]{1}' . $alpha3 . '{1})([0-9]{1}' . $alpha5 . '{2})$/';
// Expression for postcodes: AANA NAA.
$pcexp[2] = '/^(' . $alpha1 . '{1}' . $alpha2 . '[0-9]{1}' . $alpha4 . ')([0-9]{1}' . $alpha5 . '{2})$/';
// Exception for the special postcode GIR 0AA.
$pcexp[3] = '/^(gir)(0aa)$/';
// Standard BFPO numbers.
$pcexp[4] = '/^(bfpo)([0-9]{1,4})$/';
// c/o BFPO numbers.
$pcexp[5] = '/^(bfpo)(c\/o[0-9]{1,3})$/';
// Load up the string to check, converting into lowercase and removing spaces.
$postcode = strtolower( $to_check );
$postcode = str_replace( ' ', '', $postcode );
// Assume we are not going to find a valid postcode.
$valid = false;
// Check the string against the six types of postcodes.
foreach ( $pcexp as $regexp ) {
if ( preg_match( $regexp, $postcode, $matches ) ) {
// Remember that we have found that the code is valid and break from loop.
$valid = true;
break;
}
}
return $valid;
}
/**
* Format the postcode according to the country and length of the postcode.
*
* @param string $postcode Postcode to format.
* @param string $country Country to format the postcode for.
* @return string Formatted postcode.
*/
public static function format_postcode( $postcode, $country ) {
return kkart_format_postcode( $postcode, $country );
}
/**
* Format a given phone number.
*
* @param mixed $tel Phone number to format.
* @return string
*/
public static function format_phone( $tel ) {
return kkart_format_phone_number( $tel );
}
}