elgg_echo(string $message_key, array $args=[], string $language= '')
Elgg language module Functions to manage language and translations.
elgg_extract($key, $array, $default=null, bool $strict=true)
Checks for $array[$key] and returns its value if it exists, else returns $default.
if(!isset($id)) $vars['id']
elgg_generate_url(string $name, array $parameters=[])
Generate a URL for named route.