function _drupal_shutdown_function in Drupal 7

Same name and namespace in other branches

1. 8 core/includes/bootstrap.inc \_drupal_shutdown_function()
2. 9 core/includes/bootstrap.inc \_drupal_shutdown_function()
3. 10 core/includes/bootstrap.inc \_drupal_shutdown_function()

Executes registered shutdown functions.

1 string reference to '_drupal_shutdown_function'

drupal_register_shutdown_function in includes/bootstrap.inc

Registers a function for execution on shutdown.

File

includes/bootstrap.inc, line 3794

Functions that need to be loaded on every Drupal request.

Code

function _drupal_shutdown_function() {
  $callbacks =& drupal_register_shutdown_function();

  // Set the CWD to DRUPAL_ROOT as it is not guaranteed to be the same as it
  // was in the normal context of execution.
  chdir(DRUPAL_ROOT);
  try {

    // Manually iterate over the array instead of using a foreach loop.
    // A foreach operates on a copy of the array, so any shutdown functions that
    // were added from other shutdown functions would never be called.
    while ($callback = current($callbacks)) {
      call_user_func_array($callback['callback'], $callback['arguments']);
      next($callbacks);
    }
  } catch (Exception $exception) {

    // If we are displaying errors, then do so with no possibility of a further uncaught exception being thrown.
    require_once DRUPAL_ROOT . '/includes/errors.inc';
    if (error_displayable()) {
      print '<h1>Uncaught exception thrown in shutdown function.</h1>';
      print '<p>' . _drupal_render_exception_safe($exception) . '</p><hr />';
    }
  }
}