101 lines
2.2 KiB
PHP
101 lines
2.2 KiB
PHP
<?php
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/**
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* @package Convert Forms
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* @version 3.2.12 Free
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*
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* @author Tassos Marinos <info@tassos.gr>
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* @link http://www.tassos.gr
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* @copyright Copyright © 2020 Tassos Marinos All Rights Reserved
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* @license GNU GPLv3 <http://www.gnu.org/licenses/gpl.html> or later
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*/
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namespace ConvertForms;
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// No direct access to this file
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defined('_JEXEC') or die;
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class Validate
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{
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/**
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* Check if given email address is valid
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*
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* @param String $email The email address to check
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*
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* @return Boolean Return true if the email address is valid
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*/
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public static function email($email)
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{
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return filter_var($email, FILTER_VALIDATE_EMAIL);
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}
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/**
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* Check DNS records corresponding to a given email address
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*
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* @param String $email The email address to check
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*
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* @return Boolean Return true if the email address has valid MX records
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*/
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public static function emaildns($email)
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{
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// Check if it's an email address format
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if (!self::email($email))
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{
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return false;
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}
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list($user, $domain) = explode('@', $email, 2);
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// checkdnsrr for PHP < 5.3.0
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if (!function_exists('checkdnsrr') && function_exists('exec') && is_callable('exec'))
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{
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@exec('nslookup -type=MX ' . escapeshellcmd($domain), $output);
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foreach($output as $line)
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{
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if (preg_match('/^' . preg_quote($domain) . '/', $line))
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{
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return true;
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}
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}
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return false;
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}
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// fallback method...
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if (!function_exists('checkdnsrr') || !is_callable('checkdnsrr'))
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{
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return true;
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}
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return checkdnsrr($domain, substr(PHP_OS, 0, 3) == 'WIN' ? 'A' : 'MX');
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}
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/**
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* Validates the given date.
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*
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* Note: This method is limited to validate only english-based dates
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* as the Date PHP class doesn't respect current locale without using hacks
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*
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* @param String $date The date string
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* @param String $format The date format to be used
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*
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* @return boolean
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*/
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public static function dateFormat($date, $format = null)
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{
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return \JDate::createFromFormat($format, trim($date));
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}
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/**
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* Validates URL
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*
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* @param string $url
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*
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* @return void
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*/
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public static function url($url)
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{
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return filter_var($url, FILTER_VALIDATE_URL);
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}
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} |