Given a path alias, return the internal path it represents.
$path: A Drupal path alias.
$path_language: An optional language code to look up the path in.
The internal path represented by the alias, or the original alias if no internal path was found.
function drupal_get_normal_path($path, $path_language = NULL) {
$original_path = $path;
// Lookup the path alias first.
if ($source = drupal_lookup_path('source', $path, $path_language)) {
$path = $source;
}
// Allow other modules to alter the inbound URL. We cannot use drupal_alter()
// here because we need to run hook_url_inbound_alter() in the reverse order
// of hook_url_outbound_alter().
foreach (array_reverse(module_implements('url_inbound_alter')) as $module) {
$function = $module . '_url_inbound_alter';
$function($path, $original_path, $path_language);
}
return $path;
}