tel.php

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<?php
/**
 * @package     Joomla.Platform
 * @subpackage  Form
 *
 * @copyright   Copyright (C) 2005 - 2013 Open Source Matters, Inc. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE
 */

defined('JPATH_PLATFORM') or die;

/**
 * Form Rule class for the Joomla Platform
 *
 * @package     Joomla.Platform
 * @subpackage  Form
 * @since       11.1
 */
class JFormRuleTel extends JFormRule
{
        /**
         * Method to test the url for a valid parts.
         *
         * @param   SimpleXMLElement  $element  The SimpleXMLElement object representing the <field /> tag for the form field object.
         * @param   mixed             $value    The form field value to validate.
         * @param   string            $group    The field name group control value. This acts as as an array container for the field.
         *                                      For example if the field has name="foo" and the group value is set to "bar" then the
         *                                      full field name would end up being "bar[foo]".
         * @param   JRegistry         $input    An optional JRegistry object with the entire data set to validate against the entire form.
         * @param   JForm             $form     The form object for which the field is being tested.
         *
         * @return  boolean  True if the value is valid, false otherwise.
         *
         * @since   11.1
         */
        public function test(SimpleXMLElement $element, $value, $group = null, JRegistry $input = null, JForm $form = null)
        {
                // If the field is empty and not required, the field is valid.
                $required = ((string) $element['required'] == 'true' || (string) $element['required'] == 'required');
                if (!$required && empty($value))
                {
                        return true;
                }

                /*
                 * @see http://www.nanpa.com/
                 * @see http://tools.ietf.org/html/rfc4933
                 * @see http://www.itu.int/rec/T-REC-E.164/en
                 *
                 * Regex by Steve Levithan
                 * @see http://blog.stevenlevithan.com/archives/validate-phone-number
                 * @note that valid ITU-T and EPP must begin with +.
                 */
                $regexarray = array('NANP' => '/^(?:\+?1[-. ]?)?\(?([2-9][0-8][0-9])\)?[-. ]?([2-9][0-9]{2})[-. ]?([0-9]{4})$/',
                        'ITU-T' => '/^\+(?:[0-9] ?){6,14}[0-9]$/', 'EPP' => '/^\+[0-9]{1,3}\.[0-9]{4,14}(?:x.+)?$/');
                if (isset($element['plan']))
                {

                        $plan = (string) $element['plan'];
                        if ($plan == 'northamerica' || $plan == 'us')
                        {
                                $plan = 'NANP';
                        }
                        elseif ($plan == 'International' || $plan == 'int' || $plan == 'missdn' || !$plan)
                        {
                                $plan = 'ITU-T';
                        }
                        elseif ($plan == 'IETF')
                        {
                                $plan = 'EPP';
                        }

                        $regex = $regexarray[$plan];

                        // Test the value against the regular expression.
                        if (preg_match($regex, $value) == false)
                        {

                                return false;
                        }
                }
                else
                {
                        /*
                         * If the rule is set but no plan is selected just check that there are between
                         * 7 and 15 digits inclusive and no illegal characters (but common number separators
                         * are allowed).
                         */
                        $cleanvalue = preg_replace('/[+. \-(\)]/', '', $value);
                        $regex = '/^[0-9]{7,15}?$/';
                        if (preg_match($regex, $cleanvalue) == true)
                        {

                                return true;
                        }
                        else
                        {

                                return false;
                        }
                }

                return true;
        }
}