elgg_view_deprecated($view, array $vars, $suggestion, $version)
Display a view with a deprecation notice.
elgg_instanceof($entity, $type=null, $subtype=null, $class=null)
Checks if $entity is an and optionally for type and subtype.
elgg_in_context($context)
Check if this context exists anywhere in the stack.
elgg_extract($key, $array, $default=null, $strict=true)
Checks for $array[$key] and returns its value if it exists, else returns $default.