elgg_view_field(array $params=[])
Renders a form field, usually with a wrapper element, a label, help text, etc.
elgg_echo($message_key, array $args=[], $language="")
Given a message key, returns an appropriately translated full-text string.
elgg_get_page_owner_entity()
Gets the owner entity for the current page.
elgg_extract($key, $array, $default=null, $strict=true)
Checks for $array[$key] and returns its value if it exists, else returns $default.