system/helpers/email_helper.php

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP 5.2.4 or newer
 *
 * NOTICE OF LICENSE
 *
 * Licensed under the Open Software License version 3.0
 *
 * This source file is subject to the Open Software License (OSL 3.0) that is
 * bundled with this package in the files license.txt / license.rst.  It is
 * also available through the world wide web at this URL:
 * http://opensource.org/licenses/OSL-3.0
 * If you did not receive a copy of the license and are unable to obtain it
 * through the world wide web, please send an email to
 * licensing@ellislab.com so we can send you a copy immediately.
 *
 * @package		CodeIgniter
 * @author		EllisLab Dev Team
 * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
 * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
 * @link		http://codeigniter.com
 * @since		Version 1.0
 * @filesource
 */

/**
 * CodeIgniter Email Helpers
 *
 * @package		CodeIgniter
 * @subpackage	Helpers
 * @category	Helpers
 * @author		EllisLab Dev Team
 * @link		http://codeigniter.com/user_guide/helpers/email_helper.html
 */

// ------------------------------------------------------------------------

if ( ! function_exists('valid_email'))
{
	/**
	 * Validate email address
	 *
	 * Updated to be more accurate to RFC822
	 * see: http://www.iamcal.com/publish/articles/php/parsing_email/
	 *
	 * @param	string
	 * @return	bool
	 */
	function valid_email($email)
	{
		$qtext = '[^\\x0d\\x22\\x5c\\x80-\\xff]';

		$dtext = '[^\\x0d\\x5b-\\x5d\\x80-\\xff]';

		$atom = '[^\\x00-\\x20\\x22\\x28\\x29\\x2c\\x2e\\x3a-\\x3c'.
			'\\x3e\\x40\\x5b-\\x5d\\x7f-\\xff]+';

		$quoted_pair = '\\x5c[\\x00-\\x7f]';

		$domain_literal = "\\x5b({$dtext}|{$quoted_pair})*\\x5d";

		$quoted_string = "\\x22({$qtext}|{$quoted_pair})*\\x22";

		$domain_ref = $atom;

		$sub_domain = "({$domain_ref}|{$domain_literal})";

		$word = "({$atom}|{$quoted_string})";

		$domain = "{$sub_domain}(\\x2e{$sub_domain})*";

		$local_part = "{$word}(\\x2e{$word})*";

		$addr_spec = "{$local_part}\\x40{$domain}";

		return (bool) preg_match("!^{$addr_spec}$!", $email);
	}
}

// ------------------------------------------------------------------------

if ( ! function_exists('send_email'))
{
	/**
	 * Send an email
	 *
	 * @param	string
	 * @param	string
	 * @param	string
	 * @return	bool
	 */
	function send_email($recipient, $subject = 'Test email', $message = 'Hello World')
	{
		return mail($recipient, $subject, $message);
	}
}

/* End of file email_helper.php */
/* Location: ./system/helpers/email_helper.php */