WPCOM_JSON_API_Endpoint::cast_and_filter PHP Метод

    function cast_and_filter($data, $documentation, $return_default_values = false, $for_output = false)
    {
        $return_as_object = false;
        if (is_object($data)) {
            // @todo this should probably be a deep copy if $data can ever have nested objects
            $data = (array) $data;
            $return_as_object = true;
        } elseif (!is_array($data)) {
            return $data;
        }
        $boolean_arg = array('false', 'true');
        $naeloob_arg = array('true', 'false');
        $return = array();
        foreach ($documentation as $key => $description) {
            if (is_array($description)) {
                // String or boolean array keys only
                $whitelist = array_keys($description);
                if ($whitelist === $boolean_arg || $whitelist === $naeloob_arg) {
                    // Truthiness
                    if (isset($data[$key])) {
                        $return[$key] = (bool) WPCOM_JSON_API::is_truthy($data[$key]);
                    } elseif ($return_default_values) {
                        $return[$key] = $whitelist === $naeloob_arg;
                        // Default to true for naeloob_arg and false for boolean_arg.
                    }
                } elseif (isset($data[$key]) && isset($description[$data[$key]])) {
                    // String Key
                    $return[$key] = (string) $data[$key];
                } elseif ($return_default_values) {
                    // Default value
                    $return[$key] = (string) current($whitelist);
                }
                continue;
            }
            $types = $this->parse_types($description);
            $type = array_shift($types);
            // Explicit default - string and int only for now.  Always set these reguardless of $return_default_values
            if (isset($type['default'])) {
                if (!isset($data[$key])) {
                    $data[$key] = $type['default'];
                }
            }
            if (!isset($data[$key])) {
                continue;
            }
            $this->cast_and_filter_item($return, $type, $key, $data[$key], $types, $for_output);
        }
        if ($return_as_object) {
            return (object) $return;
        }
        return $return;
    }