text: <?php
  
  /****************************************************************************/
  /*                                                                          */
  /* YOU MAY WISH TO MODIFY OR REMOVE THE FOLLOWING LINES WHICH SET DEFAULTS  */
  /*                                                                          */
  /****************************************************************************/
  
  $preferences = Swift_Preferences::getInstance();
  
  // Sets the default charset so that setCharset() is not needed elsewhere
  $preferences->setCharset('utf-8');
  
  // Without these lines the default caching mechanism is "array" but this uses a lot of memory.
  // If possible, use a disk cache to enable attaching large attachments etc.
  // You can override the default temporary directory by setting the TMPDIR environment variable.
  
  // The @ operator in front of is_writable calls is to avoid PHP warnings
  // when using open_basedir
  $tmp = getenv('TMPDIR');
  if ($tmp && @is_writable($tmp)) {
      $preferences
          ->setTempDir($tmp)
          ->setCacheType('disk');
  } elseif (function_exists('sys_get_temp_dir') && @is_writable(sys_get_temp_dir())) {
      $preferences
          ->setTempDir(sys_get_temp_dir())
          ->setCacheType('disk');
  }
  
  // this should only be done when Swiftmailer won't use the native QP content encoder
  // see mime_deps.php
  if (version_compare(phpversion(), '5.4.7', '<')) {
      $preferences->setQPDotEscape(false);
  }
  