File Content: class-kkart-validation.php <?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 ); } } Submit