Fix checkRpItemsPosition

[ryzomcore.git] / web / public_php / webtt / cake / libs / validation.php

<?php
/**
 * Validation Class.  Used for validation of model data
 *
 * PHP versions 4 and 5
 *
 * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
 * Copyright 2005-2010, Cake Software Foundation, Inc. (http://cakefoundation.org)
 *
 * Licensed under The MIT License
 * Redistributions of files must retain the above copyright notice.
 *
 * @copyright     Copyright 2005-2010, Cake Software Foundation, Inc. (http://cakefoundation.org)
 * @link          http://cakephp.org CakePHP(tm) Project
 * @package       cake
 * @subpackage    cake.cake.libs
 * @since         CakePHP(tm) v 1.2.0.3830
 * @license       MIT License (http://www.opensource.org/licenses/mit-license.php)
 */
if (!class_exists('Multibyte')) {
        App::import('Core', 'Multibyte', false);
}
/**
 * Offers different validation methods.
 *
 * @package       cake
 * @subpackage    cake.cake.libs
 * @since         CakePHP v 1.2.0.3830
 */
class Validation extends Object {

/**
 * Set the value of methods $check param.
 *
 * @var string
 * @access public
 */
        var $check = null;

/**
 * Set to a valid regular expression in the class methods.
 * Can be set from $regex param also
 *
 * @var string
 * @access public
 */
        var $regex = null;

/**
 * Some complex patterns needed in multiple places
 *
 * @var array
 * @access private
 */
        var $__pattern = array(
                'hostname' => '(?:[a-z0-9][-a-z0-9]*\.)*(?:[a-z0-9][-a-z0-9]{0,62})\.(?:(?:[a-z]{2}\.)?[a-z]{2,4}|museum|travel)'
        );

/**
 * Some class methods use a country to determine proper validation.
 * This can be passed to methods in the $country param
 *
 * @var string
 * @access public
 */
        var $country = null;

/**
 * Some class methods use a deeper validation when set to true
 *
 * @var string
 * @access public
 */
        var $deep = null;

/**
 * Some class methods use the $type param to determine which validation to perfom in the method
 *
 * @var string
 * @access public
 */
        var $type = null;

/**
 * Holds an array of errors messages set in this class.
 * These are used for debugging purposes
 *
 * @var array
 * @access public
 */
        var $errors = array();

/**
 * Gets a reference to the Validation object instance
 *
 * @return object Validation instance
 * @access public
 * @static
 */
        function &getInstance() {
                static $instance = array();

                if (!$instance) {
                        $instance[0] =& new Validation();
                }
                return $instance[0];
        }

/**
 * Checks that a string contains something other than whitespace
 *
 * Returns true if string contains something other than whitespace
 *
 * $check can be passed as an array:
 * array('check' => 'valueToCheck');
 *
 * @param mixed $check Value to check
 * @return boolean Success
 * @access public
 */
        function notEmpty($check) {
                $_this =& Validation::getInstance();
                $_this->__reset();
                $_this->check = $check;

                if (is_array($check)) {
                        $_this->_extract($check);
                }

                if (empty($_this->check) && $_this->check != '0') {
                        return false;
                }
                $_this->regex = '/[^\s]+/m';
                return $_this->_check();
        }

/**
 * Checks that a string contains only integer or letters
 *
 * Returns true if string contains only integer or letters
 *
 * $check can be passed as an array:
 * array('check' => 'valueToCheck');
 *
 * @param mixed $check Value to check
 * @return boolean Success
 * @access public
 */
        function alphaNumeric($check) {
                $_this =& Validation::getInstance();
                $_this->__reset();
                $_this->check = $check;

                if (is_array($check)) {
                        $_this->_extract($check);
                }

                if (empty($_this->check) && $_this->check != '0') {
                        return false;
                }
                $_this->regex = '/^[\p{Ll}\p{Lm}\p{Lo}\p{Lt}\p{Lu}\p{Nd}]+$/mu';
                return $_this->_check();
        }

/**
 * Checks that a string length is within s specified range.
 * Spaces are included in the character count.
 * Returns true is string matches value min, max, or between min and max,
 *
 * @param string $check Value to check for length
 * @param integer $min Minimum value in range (inclusive)
 * @param integer $max Maximum value in range (inclusive)
 * @return boolean Success
 * @access public
 */
        function between($check, $min, $max) {
                $length = mb_strlen($check);
                return ($length >= $min && $length <= $max);
        }

/**
 * Returns true if field is left blank -OR- only whitespace characters are present in it's value
 * Whitespace characters include Space, Tab, Carriage Return, Newline
 *
 * $check can be passed as an array:
 * array('check' => 'valueToCheck');
 *
 * @param mixed $check Value to check
 * @return boolean Success
 * @access public
 */
        function blank($check) {
                $_this =& Validation::getInstance();
                $_this->__reset();
                $_this->check = $check;

                if (is_array($check)) {
                        $_this->_extract($check);
                }

                $_this->regex = '/[^\\s]/';
                return !$_this->_check();
        }

/**
 * Validation of credit card numbers.
 * Returns true if $check is in the proper credit card format.
 *
 * @param mixed $check credit card number to validate
 * @param mixed $type 'all' may be passed as a sting, defaults to fast which checks format of most major credit cards
 *    if an array is used only the values of the array are checked.
 *    Example: array('amex', 'bankcard', 'maestro')
 * @param boolean $deep set to true this will check the Luhn algorithm of the credit card.
 * @param string $regex A custom regex can also be passed, this will be used instead of the defined regex values
 * @return boolean Success
 * @access public
 * @see Validation::_luhn()
 */
        function cc($check, $type = 'fast', $deep = false, $regex = null) {
                $_this =& Validation::getInstance();
                $_this->__reset();
                $_this->check = $check;
                $_this->type = $type;
                $_this->deep = $deep;
                $_this->regex = $regex;

                if (is_array($check)) {
                        $_this->_extract($check);
                }
                $_this->check = str_replace(array('-', ' '), '', $_this->check);

                if (mb_strlen($_this->check) < 13) {
                        return false;
                }

                if (!is_null($_this->regex)) {
                        if ($_this->_check()) {
                                return $_this->_luhn();
                        }
                }
                $cards = array(
                        'all' => array(
                                'amex' => '/^3[4|7]\\d{13}$/',
                                'bankcard' => '/^56(10\\d\\d|022[1-5])\\d{10}$/',
                                'diners'   => '/^(?:3(0[0-5]|[68]\\d)\\d{11})|(?:5[1-5]\\d{14})$/',
                                'disc'     => '/^(?:6011|650\\d)\\d{12}$/',
                                'electron' => '/^(?:417500|4917\\d{2}|4913\\d{2})\\d{10}$/',
                                'enroute'  => '/^2(?:014|149)\\d{11}$/',
                                'jcb'      => '/^(3\\d{4}|2100|1800)\\d{11}$/',
                                'maestro'  => '/^(?:5020|6\\d{3})\\d{12}$/',
                                'mc'       => '/^5[1-5]\\d{14}$/',
                                'solo'     => '/^(6334[5-9][0-9]|6767[0-9]{2})\\d{10}(\\d{2,3})?$/',
                                'switch'   => '/^(?:49(03(0[2-9]|3[5-9])|11(0[1-2]|7[4-9]|8[1-2])|36[0-9]{2})\\d{10}(\\d{2,3})?)|(?:564182\\d{10}(\\d{2,3})?)|(6(3(33[0-4][0-9])|759[0-9]{2})\\d{10}(\\d{2,3})?)$/',
                                'visa'     => '/^4\\d{12}(\\d{3})?$/',
                                'voyager'  => '/^8699[0-9]{11}$/'
                        ),
                        'fast'   => '/^(?:4[0-9]{12}(?:[0-9]{3})?|5[1-5][0-9]{14}|6011[0-9]{12}|3(?:0[0-5]|[68][0-9])[0-9]{11}|3[47][0-9]{13})$/'
                );

                if (is_array($_this->type)) {
                        foreach ($_this->type as $value) {
                                $_this->regex = $cards['all'][strtolower($value)];

                                if ($_this->_check()) {
                                        return $_this->_luhn();
                                }
                        }
                } elseif ($_this->type == 'all') {
                        foreach ($cards['all'] as $value) {
                                $_this->regex = $value;

                                if ($_this->_check()) {
                                        return $_this->_luhn();
                                }
                        }
                } else {
                        $_this->regex = $cards['fast'];

                        if ($_this->_check()) {
                                return $_this->_luhn();
                        }
                }
        }

/**
 * Used to compare 2 numeric values.
 *
 * @param mixed $check1 if string is passed for a string must also be passed for $check2
 *    used as an array it must be passed as array('check1' => value, 'operator' => 'value', 'check2' -> value)
 * @param string $operator Can be either a word or operand
 *    is greater >, is less <, greater or equal >=
 *    less or equal <=, is less <, equal to ==, not equal !=
 * @param integer $check2 only needed if $check1 is a string
 * @return boolean Success
 * @access public
 */
        function comparison($check1, $operator = null, $check2 = null) {
                if (is_array($check1)) {
                        extract($check1, EXTR_OVERWRITE);
                }
                $operator = str_replace(array(' ', "\t", "\n", "\r", "\0", "\x0B"), '', strtolower($operator));

                switch ($operator) {
                        case 'isgreater':
                        case '>':
                                if ($check1 > $check2) {
                                        return true;
                                }
                                break;
                        case 'isless':
                        case '<':
                                if ($check1 < $check2) {
                                        return true;
                                }
                                break;
                        case 'greaterorequal':
                        case '>=':
                                if ($check1 >= $check2) {
                                        return true;
                                }
                                break;
                        case 'lessorequal':
                        case '<=':
                                if ($check1 <= $check2) {
                                        return true;
                                }
                                break;
                        case 'equalto':
                        case '==':
                                if ($check1 == $check2) {
                                        return true;
                                }
                                break;
                        case 'notequal':
                        case '!=':
                                if ($check1 != $check2) {
                                        return true;
                                }
                                break;
                        default:
                                $_this =& Validation::getInstance();
                                $_this->errors[] = __('You must define the $operator parameter for Validation::comparison()', true);
                                break;
                }
                return false;
        }

/**
 * Used when a custom regular expression is needed.
 *
 * @param mixed $check When used as a string, $regex must also be a valid regular expression.
 *                                                              As and array: array('check' => value, 'regex' => 'valid regular expression')
 * @param string $regex If $check is passed as a string, $regex must also be set to valid regular expression
 * @return boolean Success
 * @access public
 */
        function custom($check, $regex = null) {
                $_this =& Validation::getInstance();
                $_this->__reset();
                $_this->check = $check;
                $_this->regex = $regex;
                if (is_array($check)) {
                        $_this->_extract($check);
                }
                if ($_this->regex === null) {
                        $_this->errors[] = __('You must define a regular expression for Validation::custom()', true);
                        return false;
                }
                return $_this->_check();
        }

/**
 * Date validation, determines if the string passed is a valid date.
 * keys that expect full month, day and year will validate leap years
 *
 * @param string $check a valid date string
 * @param mixed $format Use a string or an array of the keys below. Arrays should be passed as array('dmy', 'mdy', etc)
 *                                      Keys: dmy 27-12-2006 or 27-12-06 separators can be a space, period, dash, forward slash
 *                                                      mdy 12-27-2006 or 12-27-06 separators can be a space, period, dash, forward slash
 *                                                      ymd 2006-12-27 or 06-12-27 separators can be a space, period, dash, forward slash
 *                                                      dMy 27 December 2006 or 27 Dec 2006
 *                                                      Mdy December 27, 2006 or Dec 27, 2006 comma is optional
 *                                                      My December 2006 or Dec 2006
 *                                                      my 12/2006 separators can be a space, period, dash, forward slash
 * @param string $regex If a custom regular expression is used this is the only validation that will occur.
 * @return boolean Success
 * @access public
 */
        function date($check, $format = 'ymd', $regex = null) {
                $_this =& Validation::getInstance();
                $_this->__reset();
                $_this->check = $check;
                $_this->regex = $regex;

                if (!is_null($_this->regex)) {
                        return $_this->_check();
                }

                $regex['dmy'] = '%^(?:(?:31(\\/|-|\\.|\\x20)(?:0?[13578]|1[02]))\\1|(?:(?:29|30)(\\/|-|\\.|\\x20)(?:0?[1,3-9]|1[0-2])\\2))(?:(?:1[6-9]|[2-9]\\d)?\\d{2})$|^(?:29(\\/|-|\\.|\\x20)0?2\\3(?:(?:(?:1[6-9]|[2-9]\\d)?(?:0[48]|[2468][048]|[13579][26])|(?:(?:16|[2468][048]|[3579][26])00))))$|^(?:0?[1-9]|1\\d|2[0-8])(\\/|-|\\.|\\x20)(?:(?:0?[1-9])|(?:1[0-2]))\\4(?:(?:1[6-9]|[2-9]\\d)?\\d{2})$%';
                $regex['mdy'] = '%^(?:(?:(?:0?[13578]|1[02])(\\/|-|\\.|\\x20)31)\\1|(?:(?:0?[13-9]|1[0-2])(\\/|-|\\.|\\x20)(?:29|30)\\2))(?:(?:1[6-9]|[2-9]\\d)?\\d{2})$|^(?:0?2(\\/|-|\\.|\\x20)29\\3(?:(?:(?:1[6-9]|[2-9]\\d)?(?:0[48]|[2468][048]|[13579][26])|(?:(?:16|[2468][048]|[3579][26])00))))$|^(?:(?:0?[1-9])|(?:1[0-2]))(\\/|-|\\.|\\x20)(?:0?[1-9]|1\\d|2[0-8])\\4(?:(?:1[6-9]|[2-9]\\d)?\\d{2})$%';
                $regex['ymd'] = '%^(?:(?:(?:(?:(?:1[6-9]|[2-9]\\d)?(?:0[48]|[2468][048]|[13579][26])|(?:(?:16|[2468][048]|[3579][26])00)))(\\/|-|\\.|\\x20)(?:0?2\\1(?:29)))|(?:(?:(?:1[6-9]|[2-9]\\d)?\\d{2})(\\/|-|\\.|\\x20)(?:(?:(?:0?[13578]|1[02])\\2(?:31))|(?:(?:0?[1,3-9]|1[0-2])\\2(29|30))|(?:(?:0?[1-9])|(?:1[0-2]))\\2(?:0?[1-9]|1\\d|2[0-8]))))$%';
                $regex['dMy'] = '/^((31(?!\\ (Feb(ruary)?|Apr(il)?|June?|(Sep(?=\\b|t)t?|Nov)(ember)?)))|((30|29)(?!\\ Feb(ruary)?))|(29(?=\\ Feb(ruary)?\\ (((1[6-9]|[2-9]\\d)(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00)))))|(0?[1-9])|1\\d|2[0-8])\\ (Jan(uary)?|Feb(ruary)?|Ma(r(ch)?|y)|Apr(il)?|Ju((ly?)|(ne?))|Aug(ust)?|Oct(ober)?|(Sep(?=\\b|t)t?|Nov|Dec)(ember)?)\\ ((1[6-9]|[2-9]\\d)\\d{2})$/';
                $regex['Mdy'] = '/^(?:(((Jan(uary)?|Ma(r(ch)?|y)|Jul(y)?|Aug(ust)?|Oct(ober)?|Dec(ember)?)\\ 31)|((Jan(uary)?|Ma(r(ch)?|y)|Apr(il)?|Ju((ly?)|(ne?))|Aug(ust)?|Oct(ober)?|(Sept|Nov|Dec)(ember)?)\\ (0?[1-9]|([12]\\d)|30))|(Feb(ruary)?\\ (0?[1-9]|1\\d|2[0-8]|(29(?=,?\\ ((1[6-9]|[2-9]\\d)(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00)))))))\\,?\\ ((1[6-9]|[2-9]\\d)\\d{2}))$/';
                $regex['My'] = '%^(Jan(uary)?|Feb(ruary)?|Ma(r(ch)?|y)|Apr(il)?|Ju((ly?)|(ne?))|Aug(ust)?|Oct(ober)?|(Sep(?=\\b|t)t?|Nov|Dec)(ember)?)[ /]((1[6-9]|[2-9]\\d)\\d{2})$%';
                $regex['my'] = '%^(((0[123456789]|10|11|12)([- /.])(([1][9][0-9][0-9])|([2][0-9][0-9][0-9]))))$%';

                $format = (is_array($format)) ? array_values($format) : array($format);
                foreach ($format as $key) {
                        $_this->regex = $regex[$key];

                        if ($_this->_check() === true) {
                                return true;
                        }
                }
                return false;
        }

/**
 * Time validation, determines if the string passed is a valid time.
 * Validates time as 24hr (HH:MM) or am/pm ([H]H:MM[a|p]m)
 * Does not allow/validate seconds.
 *
 * @param string $check a valid time string
 * @return boolean Success
 * @access public
 */

        function time($check) {
                $_this =& Validation::getInstance();
                $_this->__reset();
                $_this->check = $check;
                $_this->regex = '%^((0?[1-9]|1[012])(:[0-5]\d){0,2}([AP]M|[ap]m))$|^([01]\d|2[0-3])(:[0-5]\d){0,2}$%';
                return $_this->_check();
        }

/**
 * Boolean validation, determines if value passed is a boolean integer or true/false.
 *
 * @param string $check a valid boolean
 * @return boolean Success
 * @access public
 */
        function boolean($check) {
                $booleanList = array(0, 1, '0', '1', true, false);
                return in_array($check, $booleanList, true);
        }

/**
 * Checks that a value is a valid decimal. If $places is null, the $check is allowed to be a scientific float
 * If no decimal point is found a false will be returned. Both the sign and exponent are optional.
 *
 * @param integer $check The value the test for decimal
 * @param integer $places if set $check value must have exactly $places after the decimal point
 * @param string $regex If a custom regular expression is used this is the only validation that will occur.
 * @return boolean Success
 * @access public
 */
        function decimal($check, $places = null, $regex = null) {
                $_this =& Validation::getInstance();
                $_this->__reset();
                $_this->regex = $regex;
                $_this->check = $check;

                if (is_null($_this->regex)) {
                        if (is_null($places)) {
                                $_this->regex = '/^[-+]?[0-9]*\\.{1}[0-9]+(?:[eE][-+]?[0-9]+)?$/';
                        } else {
                                $_this->regex = '/^[-+]?[0-9]*\\.{1}[0-9]{'.$places.'}$/';
                        }
                }
                return $_this->_check();
        }

/**
 * Validates for an email address.
 *
 * @param string $check Value to check
 * @param boolean $deep Perform a deeper validation (if true), by also checking availability of host
 * @param string $regex Regex to use (if none it will use built in regex)
 * @return boolean Success
 * @access public
 */
        function email($check, $deep = false, $regex = null) {
                $_this =& Validation::getInstance();
                $_this->__reset();
                $_this->check = $check;
                $_this->regex = $regex;
                $_this->deep = $deep;

                if (is_array($check)) {
                        $_this->_extract($check);
                }

                if (is_null($_this->regex)) {
                        $_this->regex = '/^[a-z0-9!#$%&\'*+\/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&\'*+\/=?^_`{|}~-]+)*@' . $_this->__pattern['hostname'] . '$/i';
                }
                $return = $_this->_check();

                if ($_this->deep === false || $_this->deep === null) {
                        return $return;
                }

                if ($return === true && preg_match('/@(' . $_this->__pattern['hostname'] . ')$/i', $_this->check, $regs)) {
                        if (function_exists('getmxrr') && getmxrr($regs[1], $mxhosts)) {
                                return true;
                        }
                        if (function_exists('checkdnsrr') && checkdnsrr($regs[1], 'MX')) {
                                return true;
                        }
                        return is_array(gethostbynamel($regs[1]));
                }
                return false;
        }

/**
 * Check that value is exactly $comparedTo.
 *
 * @param mixed $check Value to check
 * @param mixed $comparedTo Value to compare
 * @return boolean Success
 * @access public
 */
        function equalTo($check, $comparedTo) {
                return ($check === $comparedTo);
        }

/**
 * Check that value has a valid file extension.
 *
 * @param mixed $check Value to check
 * @param array $extensions file extenstions to allow
 * @return boolean Success
 * @access public
 */
        function extension($check, $extensions = array('gif', 'jpeg', 'png', 'jpg')) {
                if (is_array($check)) {
                        return Validation::extension(array_shift($check), $extensions);
                }
                $extension = strtolower(array_pop(explode('.', $check)));
                foreach ($extensions as $value) {
                        if ($extension == strtolower($value)) {
                                return true;
                        }
                }
                return false;
        }

/**
 * Validation of an IP address.
 *
 * Valid IP version strings for type restriction are:
 * - both: Check both IPv4 and IPv6, return true if the supplied address matches either version
 * - IPv4: Version 4 (Eg: 127.0.0.1, 192.168.10.123, 203.211.24.8)
 * - IPv6: Version 6 (Eg: ::1, 2001:0db8::1428:57ab)
 *
 * @param string $check The string to test.
 * @param string $type The IP Version to test against
 * @return boolean Success
 * @access public
 */
        function ip($check, $type = 'both') {
                $_this =& Validation::getInstance();
                $success = false;
                $type = strtolower($type);
                if ($type === 'ipv4' || $type === 'both') {
                        $success |= $_this->_ipv4($check);
                }
                if ($type === 'ipv6' || $type === 'both') {
                        $success |= $_this->_ipv6($check);
                }
                return $success;
        }

/**
 * Validation of IPv4 addresses.
 *
 * @param string $check IP Address to test
 * @return boolean Success
 * @access protected
 */
        function _ipv4($check) {
                if (function_exists('filter_var')) {
                        return filter_var($check, FILTER_VALIDATE_IP, array('flags' => FILTER_FLAG_IPV4)) !== false;
                }
                $this->__populateIp();
                $this->check = $check;
                $this->regex = '/^' . $this->__pattern['IPv4'] . '$/';
                return $this->_check();
        }

/**
 * Validation of IPv6 addresses.
 *
 * @param string $check IP Address to test
 * @return boolean Success
 * @access protected
 */
        function _ipv6($check) {
                if (function_exists('filter_var')) {
                        return filter_var($check, FILTER_VALIDATE_IP, array('flags' => FILTER_FLAG_IPV6)) !== false;
                }
                $this->__populateIp();
                $this->check = $check;
                $this->regex = '/^' . $this->__pattern['IPv6'] . '$/';
                return $this->_check();
        }

/**
 * Checks whether the length of a string is greater or equal to a minimal length.
 *
 * @param string $check The string to test
 * @param integer $min The minimal string length
 * @return boolean Success
 * @access public
 */
        function minLength($check, $min) {
                $length = mb_strlen($check);
                return ($length >= $min);
        }

/**
 * Checks whether the length of a string is smaller or equal to a maximal length..
 *
 * @param string $check The string to test
 * @param integer $max The maximal string length
 * @return boolean Success
 * @access public
 */
        function maxLength($check, $max) {
                $length = mb_strlen($check);
                return ($length <= $max);
        }

/**
 * Checks that a value is a monetary amount.
 *
 * @param string $check Value to check
 * @param string $symbolPosition Where symbol is located (left/right)
 * @return boolean Success
 * @access public
 */
        function money($check, $symbolPosition = 'left') {
                $_this =& Validation::getInstance();
                $_this->check = $check;

                if ($symbolPosition == 'right') {
                        $_this->regex = '/^(?!0,?\d)(?:\d{1,3}(?:([, .])\d{3})?(?:\1\d{3})*|(?:\d+))((?!\1)[,.]\d{2})?(?<!\x{00a2})\p{Sc}?$/u';
                } else {
                        $_this->regex = '/^(?!\x{00a2})\p{Sc}?(?!0,?\d)(?:\d{1,3}(?:([, .])\d{3})?(?:\1\d{3})*|(?:\d+))((?!\1)[,.]\d{2})?$/u';
                }
                return $_this->_check();
        }

/**
 * Validate a multiple select.
 *
 * Valid Options
 *
 * - in => provide a list of choices that selections must be made from
 * - max => maximun number of non-zero choices that can be made
 * - min => minimum number of non-zero choices that can be made
 *
 * @param mixed $check Value to check
 * @param mixed $options Options for the check.
 * @return boolean Success
 * @access public
 */
        function multiple($check, $options = array()) {
                $defaults = array('in' => null, 'max' => null, 'min' => null);
                $options = array_merge($defaults, $options);
                $check = array_filter((array)$check);
                if (empty($check)) {
                        return false;
                }
                if ($options['max'] && count($check) > $options['max']) {
                        return false;
                }
                if ($options['min'] && count($check) < $options['min']) {
                        return false;
                }
                if ($options['in'] && is_array($options['in'])) {
                        foreach ($check as $val) {
                                if (!in_array($val, $options['in'])) {
                                        return false;
                                }
                        }
                }
                return true;
        }

/**
 * Checks if a value is numeric.
 *
 * @param string $check Value to check
 * @return boolean Succcess
 * @access public
 */
        function numeric($check) {
                return is_numeric($check);
        }

/**
 * Check that a value is a valid phone number.
 *
 * @param mixed $check Value to check (string or array)
 * @param string $regex Regular expression to use
 * @param string $country Country code (defaults to 'all')
 * @return boolean Success
 * @access public
 */
        function phone($check, $regex = null, $country = 'all') {
                $_this =& Validation::getInstance();
                $_this->check = $check;
                $_this->regex = $regex;
                $_this->country = $country;
                if (is_array($check)) {
                        $_this->_extract($check);
                }

                if (is_null($_this->regex)) {
                        switch ($_this->country) {
                                case 'us':
                                case 'all':
                                case 'can':
                                // includes all NANPA members. see http://en.wikipedia.org/wiki/North_American_Numbering_Plan#List_of_NANPA_countries_and_territories
                                        $_this->regex  = '/^(?:\+?1)?[-. ]?\\(?[2-9][0-8][0-9]\\)?[-. ]?[2-9][0-9]{2}[-. ]?[0-9]{4}$/';
                                break;
                        }
                }
                if (empty($_this->regex)) {
                        return $_this->_pass('phone', $check, $country);
                }
                return $_this->_check();
        }

/**
 * Checks that a given value is a valid postal code.
 *
 * @param mixed $check Value to check
 * @param string $regex Regular expression to use
 * @param string $country Country to use for formatting
 * @return boolean Success
 * @access public
 */
        function postal($check, $regex = null, $country = null) {
                $_this =& Validation::getInstance();
                $_this->check = $check;
                $_this->regex = $regex;
                $_this->country = $country;
                if (is_array($check)) {
                        $_this->_extract($check);
                }
                if (empty($country)) {
                        $_this->country = 'us';
                }

                if (is_null($_this->regex)) {
                        switch ($_this->country) {
                                case 'uk':
                                        $_this->regex  = '/\\A\\b[A-Z]{1,2}[0-9][A-Z0-9]? [0-9][ABD-HJLNP-UW-Z]{2}\\b\\z/i';
                                        break;
                                case 'ca':
                                        $_this->regex  = '/\\A\\b[ABCEGHJKLMNPRSTVXY][0-9][A-Z] ?[0-9][A-Z][0-9]\\b\\z/i';
                                        break;
                                case 'it':
                                case 'de':
                                        $_this->regex  = '/^[0-9]{5}$/i';
                                        break;
                                case 'be':
                                        $_this->regex  = '/^[1-9]{1}[0-9]{3}$/i';
                                        break;
                                case 'us':
                                        $_this->regex  = '/\\A\\b[0-9]{5}(?:-[0-9]{4})?\\b\\z/i';
                                        break;
                        }
                }
                if (empty($_this->regex)) {
                        return $_this->_pass('postal', $check, $country);
                }
                return $_this->_check();
        }

/**
 * Validate that a number is in specified range.
 * if $lower and $upper are not set, will return true if
 * $check is a legal finite on this platform
 *
 * @param string $check Value to check
 * @param integer $lower Lower limit
 * @param integer $upper Upper limit
 * @return boolean Success
 * @access public
 */
        function range($check, $lower = null, $upper = null) {
                if (!is_numeric($check)) {
                        return false;
                }
                if (isset($lower) && isset($upper)) {
                        return ($check > $lower && $check < $upper);
                }
                return is_finite($check);
        }

/**
 * Checks that a value is a valid Social Security Number.
 *
 * @param mixed $check Value to check
 * @param string $regex Regular expression to use
 * @param string $country Country
 * @return boolean Success
 * @access public
 */
        function ssn($check, $regex = null, $country = null) {
                $_this =& Validation::getInstance();
                $_this->check = $check;
                $_this->regex = $regex;
                $_this->country = $country;
                if (is_array($check)) {
                        $_this->_extract($check);
                }

                if (is_null($_this->regex)) {
                        switch ($_this->country) {
                                case 'dk':
                                        $_this->regex  = '/\\A\\b[0-9]{6}-[0-9]{4}\\b\\z/i';
                                        break;
                                case 'nl':
                                        $_this->regex  = '/\\A\\b[0-9]{9}\\b\\z/i';
                                        break;
                                case 'us':
                                        $_this->regex  = '/\\A\\b[0-9]{3}-[0-9]{2}-[0-9]{4}\\b\\z/i';
                                        break;
                        }
                }
                if (empty($_this->regex)) {
                        return $_this->_pass('ssn', $check, $country);
                }
                return $_this->_check();
        }

/**
 * Checks that a value is a valid uuid - http://tools.ietf.org/html/rfc4122
 * 
 * @param string $check Value to check
 * @return boolean Success
 * @access public
 */
        function uuid($check) {
                $_this =& Validation::getInstance();
                $_this->check = $check;
                $_this->regex = '/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/i';
                return $_this->_check();
        }

/**
 * Checks that a value is a valid URL according to http://www.w3.org/Addressing/URL/url-spec.txt
 *
 * The regex checks for the following component parts:
 *
 * - a valid, optional, scheme
 * - a valid ip address OR
 *   a valid domain name as defined by section 2.3.1 of http://www.ietf.org/rfc/rfc1035.txt
 *   with an optional port number
 * - an optional valid path
 * - an optional query string (get parameters)
 * - an optional fragment (anchor tag)
 *
 * @param string $check Value to check
 * @param boolean $strict Require URL to be prefixed by a valid scheme (one of http(s)/ftp(s)/file/news/gopher)
 * @return boolean Success
 * @access public
 */
        function url($check, $strict = false) {
                $_this =& Validation::getInstance();
                $_this->__populateIp();
                $_this->check = $check;
                $validChars = '([' . preg_quote('!"$&\'()*+,-.@_:;=~[]') . '\/0-9a-z\p{L}\p{N}]|(%[0-9a-f]{2}))';
                $_this->regex = '/^(?:(?:https?|ftps?|file|news|gopher):\/\/)' . (!empty($strict) ? '' : '?') .
                        '(?:' . $_this->__pattern['IPv4'] . '|\[' . $_this->__pattern['IPv6'] . '\]|' . $_this->__pattern['hostname'] . ')' .
                        '(?::[1-9][0-9]{0,4})?' .
                        '(?:\/?|\/' . $validChars . '*)?' .
                        '(?:\?' . $validChars . '*)?' .
                        '(?:#' . $validChars . '*)?$/iu';
                return $_this->_check();
        }

/**
 * Checks if a value is in a given list.
 *
 * @param string $check Value to check
 * @param array $list List to check against
 * @return boolean Succcess
 * @access public
 */
        function inList($check, $list) {
                return in_array($check, $list);
        }

/**
 * Runs an user-defined validation.
 *
 * @param mixed $check value that will be validated in user-defined methods.
 * @param object $object class that holds validation method
 * @param string $method class method name for validation to run
 * @param array $args arguments to send to method
 * @return mixed user-defined class class method returns
 * @access public
 */
        function userDefined($check, $object, $method, $args = null) {
                return call_user_func_array(array(&$object, $method), array($check, $args));
        }

/**
 * Attempts to pass unhandled Validation locales to a class starting with $classPrefix
 * and ending with Validation.  For example $classPrefix = 'nl', the class would be
 * `NlValidation`.
 *
 * @param string $method The method to call on the other class.
 * @param mixed $check The value to check or an array of parameters for the method to be called.
 * @param string $classPrefix The prefix for the class to do the validation.
 * @return mixed Return of Passed method, false on failure
 * @access protected
 **/
        function _pass($method, $check, $classPrefix) {
                $className = ucwords($classPrefix) . 'Validation';
                if (!class_exists($className)) {
                        trigger_error(sprintf(__('Could not find %s class, unable to complete validation.', true), $className), E_USER_WARNING);
                        return false;
                }
                if (!is_callable(array($className, $method))) {
                        trigger_error(sprintf(__('Method %s does not exist on %s unable to complete validation.', true), $method, $className), E_USER_WARNING);
                        return false;
                }
                $check = (array)$check;
                return call_user_func_array(array($className, $method), $check);
        }

/**
 * Runs a regular expression match.
 *
 * @return boolean Success of match
 * @access protected
 */
        function _check() {
                $_this =& Validation::getInstance();
                if (preg_match($_this->regex, $_this->check)) {
                        $_this->error[] = false;
                        return true;
                } else {
                        $_this->error[] = true;
                        return false;
                }
        }

/**
 * Get the values to use when value sent to validation method is
 * an array.
 *
 * @param array $params Parameters sent to validation method
 * @return void
 * @access protected
 */
        function _extract($params) {
                $_this =& Validation::getInstance();
                extract($params, EXTR_OVERWRITE);

                if (isset($check)) {
                        $_this->check = $check;
                }
                if (isset($regex)) {
                        $_this->regex = $regex;
                }
                if (isset($country)) {
                        $_this->country = mb_strtolower($country);
                }
                if (isset($deep)) {
                        $_this->deep = $deep;
                }
                if (isset($type)) {
                        $_this->type = $type;
                }
        }

/**
 * Luhn algorithm
 *
 * @see http://en.wikipedia.org/wiki/Luhn_algorithm
 * @return boolean Success
 * @access protected
 */
        function _luhn() {
                $_this =& Validation::getInstance();
                if ($_this->deep !== true) {
                        return true;
                }
                if ($_this->check == 0) {
                        return false;
                }
                $sum = 0;
                $length = strlen($_this->check);

                for ($position = 1 - ($length % 2); $position < $length; $position += 2) {
                        $sum += $_this->check[$position];
                }

                for ($position = ($length % 2); $position < $length; $position += 2) {
                        $number = $_this->check[$position] * 2;
                        $sum += ($number < 10) ? $number : $number - 9;
                }

                return ($sum % 10 == 0);
        }

/*
 * Lazily popualate the IP address patterns used for validations
 *
 * @return void
 * @access private
 */
        function __populateIp() {
                if (!isset($this->__pattern['IPv6'])) {
                        $pattern  = '((([0-9A-Fa-f]{1,4}:){7}(([0-9A-Fa-f]{1,4})|:))|(([0-9A-Fa-f]{1,4}:){6}';
                        $pattern .= '(:|((25[0-5]|2[0-4]\d|[01]?\d{1,2})(\.(25[0-5]|2[0-4]\d|[01]?\d{1,2})){3})';
                        $pattern .= '|(:[0-9A-Fa-f]{1,4})))|(([0-9A-Fa-f]{1,4}:){5}((:((25[0-5]|2[0-4]\d|[01]?\d{1,2})';
                        $pattern .= '(\.(25[0-5]|2[0-4]\d|[01]?\d{1,2})){3})?)|((:[0-9A-Fa-f]{1,4}){1,2})))|(([0-9A-Fa-f]{1,4}:)';
                        $pattern .= '{4}(:[0-9A-Fa-f]{1,4}){0,1}((:((25[0-5]|2[0-4]\d|[01]?\d{1,2})(\.(25[0-5]|2[0-4]\d|[01]?\d{1,2}))';
                        $pattern .= '{3})?)|((:[0-9A-Fa-f]{1,4}){1,2})))|(([0-9A-Fa-f]{1,4}:){3}(:[0-9A-Fa-f]{1,4}){0,2}';
                        $pattern .= '((:((25[0-5]|2[0-4]\d|[01]?\d{1,2})(\.(25[0-5]|2[0-4]\d|[01]?\d{1,2})){3})?)|';
                        $pattern .= '((:[0-9A-Fa-f]{1,4}){1,2})))|(([0-9A-Fa-f]{1,4}:){2}(:[0-9A-Fa-f]{1,4}){0,3}';
                        $pattern .= '((:((25[0-5]|2[0-4]\d|[01]?\d{1,2})(\.(25[0-5]|2[0-4]\d|[01]?\d{1,2}))';
                        $pattern .= '{3})?)|((:[0-9A-Fa-f]{1,4}){1,2})))|(([0-9A-Fa-f]{1,4}:)(:[0-9A-Fa-f]{1,4})';
                        $pattern .= '{0,4}((:((25[0-5]|2[0-4]\d|[01]?\d{1,2})(\.(25[0-5]|2[0-4]\d|[01]?\d{1,2})){3})?)';
                        $pattern .= '|((:[0-9A-Fa-f]{1,4}){1,2})))|(:(:[0-9A-Fa-f]{1,4}){0,5}((:((25[0-5]|2[0-4]';
                        $pattern .= '\d|[01]?\d{1,2})(\.(25[0-5]|2[0-4]\d|[01]?\d{1,2})){3})?)|((:[0-9A-Fa-f]{1,4})';
                        $pattern .= '{1,2})))|(((25[0-5]|2[0-4]\d|[01]?\d{1,2})(\.(25[0-5]|2[0-4]\d|[01]?\d{1,2})){3})))(%.+)?';

                        $this->__pattern['IPv6'] = $pattern;
                }
                if (!isset($this->__pattern['IPv4'])) {
                        $pattern = '(?:(?:25[0-5]|2[0-4][0-9]|(?:(?:1[0-9])?|[1-9]?)[0-9])\.){3}(?:25[0-5]|2[0-4][0-9]|(?:(?:1[0-9])?|[1-9]?)[0-9])';
                        $this->__pattern['IPv4'] = $pattern;
                }
        }

/**
 * Reset internal variables for another validation run.
 *
 * @return void
 * @access private
 */
        function __reset() {
                $this->check = null;
                $this->regex = null;
                $this->country = null;
                $this->deep = null;
                $this->type = null;
                $this->error = array();
                $this->errors = array();
        }
}