Partial function to limit include variable scope

partial.php

/*
 * Function name
 *
 * Super-crude way of limiting the variable scope of includes
 *
 * @file (string) The file to be included
 * @vars (array) The variables to be available in the include
 */

function partial($file, $vars) {
  extract($vars);
  $backtrace = debug_backtrace();
  $directory = dirname($backtrace['0']['file']);
  require($directory . "/" . $file);
}