<?php
  
  /*
   * This file is part of the Monolog package.
   *
   * (c) Jordi Boggiano <j.boggiano@seld.be>
   *
   * For the full copyright and license information, please view the LICENSE
   * file that was distributed with this source code.
   */
  
  namespace Monolog\Handler;
  
  use Monolog\Logger;
  
  /**
   * NativeMailerHandler uses the mail() function to send the emails
   *
   * @author Christophe Coevoet <stof@notk.org>
   */
  class NativeMailerHandler extends MailHandler
  {
      protected $to;
      protected $subject;
      protected $headers = array(
          'Content-type: text/plain; charset=utf-8'
      );
  
      /**
       * @param string|array $to      The receiver of the mail
       * @param string       $subject The subject of the mail
       * @param string       $from    The sender of the mail
       * @param integer      $level   The minimum logging level at which this handler will be triggered
       * @param boolean      $bubble  Whether the messages that are handled can bubble up the stack or not
       */
      public function __construct($to, $subject, $from, $level = Logger::ERROR, $bubble = true)
      {
          parent::__construct($level, $bubble);
          $this->to = is_array($to) ? $to : array($to);
          $this->subject = $subject;
          $this->addHeader(sprintf('From: %s', $from));
      }
  
      /**
       * @param string|array $headers Custom added headers
       */
      public function addHeader($headers)
      {
          foreach ((array) $headers as $header) {
              if (strpos($header, "
  ") !== false || strpos($header, "\r") !== false) {
                  throw new \InvalidArgumentException('Headers can not contain newline characters for security reasons');
              }
              $this->headers[] = $header;
          }
      }
  
      /**
       * {@inheritdoc}
       */
      protected function send($content, array $records)
      {
          $content = wordwrap($content, 70);
          $headers = implode("\r
  ", $this->headers) . "\r
  ";
          foreach ($this->to as $to) {
              mail($to, $this->subject, $content, $headers);
          }
      }
  }