hook_drupal_goto_alter(&$path, &$options, &$http_response_code)Change the page the user is sent to by drupal_goto().
&$path A Drupal path or a full URL.
&$options An associative array of additional URL options to pass to url().
&$http_response_code The HTTP status code to use for the redirection. See drupal_goto() for more information.
modules/system/system.api.php, line 2576
<?php
function hook_drupal_goto_alter(&$path, &$options, &$http_response_code) {
// A good addition to misery module.
$http_response_code = 500;
}
?>