File io/mail/MailUtil.class.php

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<?php
/**
 * This class provides you utilities for emails.
 * @package     IO
 * @subpackage  Mail
 * @copyright   &copy; 2005-2019 PHPBoost
 * @license     https://www.gnu.org/licenses/gpl-3.0.html GNU/GPL-3.0
 * @author      Benoit SAUTEL <ben.popeye@phpboost.com>
 * @version     PHPBoost 5.2 - last update: 2016 11 15
 * @since       PHPBoost 3.0 - 2010 04 12
 * @contributor Regis VIARRE <crowkait@phpboost.com>
 * @contributor Arnaud GENET <elenwii@phpboost.com>
 * @contributor mipel <mipel@phpboost.com>
*/

class MailUtil
{
    private static $regex = '(?:[a-z0-9_!#$%&\'*+/=?^|~-]\.?){0,63}[a-z0-9_!#$%&\'*+/=?^|~-]+@(?:[a-z0-9_-]{2,}\.)+([a-z0-9_-]{2,}\.)*[a-z]{2,4}';

    /**
     * Check whether the mail address is valid, it respects the mail RFC
     * @param string $mail_address
     * @return boolean true if the mail is valid, false otherwise
     */
    public static function is_mail_valid($mail_address)
    {
        return (bool)preg_match(self::get_mail_checking_regex(), $mail_address);
    }

    /**
     * Return the RFC mail regex.
     * @return string the mail regex
     */
    public static function get_mail_checking_regex()
    {
        return '`^' . self::$regex . '$`iu';
    }

    /**
     * Return the RFC mail regex without delimiters, it's commonly used for compatibility with javascript regex.
     * @return string the mail regex without delimiters
     */
    public static function get_mail_checking_raw_regex()
    {
        return self::$regex;
    }
}
?>