elgg_extract($key, array $array, $default=null, $strict=true)
Checks for $array[$key] and returns its value if it exists, else returns $default.
elgg_echo($message_key, $args=array(), $language="")
Given a message key, returns an appropriately translated full-text string.
$context
Main content area layout.
if(! $vars['title'] && $vars['title'] !==false) if(isset($vars['filter_override'])) if(!isset($vars['filter']) &&elgg_is_logged_in() && $context) $filter