/mvc/components/validator

<?php
/**
 * Validates user-entered data
 */
class validatorComponent {
    /**
     * Verifies a hex color (used in HTML/CSS) contains exactly six base-16 digits
     *
     * @param string $data
     * @return boolean
     */
    public function isValidHexColor($data) {
        return (bool) preg_match('/[0-9ABCDEF]{6}/', $data);
    }

    /**
     * Verifies a URL is valid
     *
     * @param string $data
     * @return boolean
     */
    public function isValidURL($data) {
        return (bool) preg_match('#(https?|ftp)://(www\.)?(\S+\.)+[^\.\s]{1,5}(:\d+)?([\\/]\S+)*?$#i', $data);
    }

    /**
     * Verifies an email is valid
     *
     * @param string $data
     * @return boolean
     */
    public function isValidEmail($data) {
        $datalen = strlen($data);
        return ($datalen > 5 && $datalen <= 60 && preg_match('/([\w!#$%"*+\/=?`{}|~^-]+)@(([\w-]+\.)+[\w-]{2,})/',
 $data));
    }

    /**
     * Verifies password is or is not valid
     *
     * @param string $pass
     * @return mixed A string containing an error message (casts to bool-true) indicates an invalid pass
     *               Bool-false indicates a valid password
     */
    public function isInvalidPassword($pass) {
        $passlen = strlen($pass);
        if ($passlen < 6) {
            $error = 'Password is too short';
        }
        if ($passlen > 16) {
            $error = 'Password is too long';
        }
        if (strpos($pass, ' ') !== false) {
            $error = 'Passwords cannot contain spaces';
        }
        if (!isset($error)) {
            $passwithoutnumbers = str_replace(range(0,9), '', $pass);
            if ($passwithoutnumbers == $pass || $passwithoutnumbers == '') {
                $error = 'Passwords must contain a mix of numbers and letters';
            }
        }
        return (isset($error) ? $error : false);
    }

    /**
     * Verifies telephone numbers
     *
     * @param mixed $data Phone number in numberic-format - alpha-chars like (443)300-VORK will be ignored (& then
 fail)
     * @param string $country Country code, currently US is the only validated number, other countries are only
 checked
     *                        for having a minimal number of numeric characters
     * @return boolean
     */
    public function isValidTelephone($data, $country = 'US') {
        if ($country == 'US') {
            $return = (bool) preg_match('/\b([2-9]\d{2})[.\s -]?(([2-9]\d{2})[.\s -]?(\d{4}))\b/', $data);
            if ($return && substr($data, 3, 3) == '555') {
                $return = false;
            }
        } else {
            $return = (strlen(get::component('filter')->getNumbersOnly($data)) > 6);
        }
        return $return;
    }
}