public static function instance($userid, $strictness = MUST_EXIST) {
        global $DB;

        if ($context = context::cache_get(CONTEXT_USER, $userid)) {
            return $context;
        }

        if (!$record = $DB->get_record('context', array('contextlevel' => CONTEXT_USER, 'instanceid' => $userid))) {
            if ($user = $DB->get_record('user', array('id' => $userid, 'deleted' => 0), 'id', $strictness)) {
                $record = context::insert_context_record(CONTEXT_USER, $user->id, '/'.SYSCONTEXTID, 0);
            }
        }

        if ($record) {
            $context = new context_user($record);
            context::cache_add($context);
            return $context;
        }

        return false;
    }
public static function instance($userid, $strictness = MUST_EXIST) {
        global $DB;

        if ($context = context::cache_get(CONTEXT_USER, $userid)) {
            return $context;
        }

        if (!$record = $DB->get_record('context', array('contextlevel' => CONTEXT_USER, 'instanceid' => $userid))) {
            if ($user = $DB->get_record('user', array('id' => $userid, 'deleted' => 0), 'id', $strictness)) {
                $record = context::insert_context_record(CONTEXT_USER, $user->id, '/'.SYSCONTEXTID, 0);
            }
        }

        if ($record) {
            $context = new context_user($record);
            context::cache_add($context);
            return $context;
        }

        return false;
    }
public static function instance ( $ userid , $ strictness = MUST_EXIST ) { global $ DB ; if ( $ context = context :: cache_get ( CONTEXT_USER , $ userid ) ) { return $ context ; } if ( ! $ record = $ DB -> get_record ( 'context' , array ( 'contextlevel' => CONTEXT_USER , 'instanceid' => $ userid ) ) ) { if ( $ user = $ DB -> get_record ( 'user' , array ( 'id' => $ userid , 'deleted' => 0 ) , 'id' , $ strictness ) ) { $ record = context :: insert_context_record ( CONTEXT_USER , $ user -> id , '/' . SYSCONTEXTID , 0 ) ; } } if ( $ record ) { $ context = new context_user ( $ record ) ; context :: cache_add ( $ context ) ; return $ context ; } return false ; }
Returns user context instance.

@static
@param int $userid id from {user} table
@param int $strictness
@return context_user context instance
Returns user context instance .