| public add_meta ( integer $level_id, string $meta_key = '', mixed $meta_value, boolean $unique = false ) : boolean | ||
| $level_id | integer | Subscription level ID. |
| $meta_key | string | Metadata name. |
| $meta_value | mixed | Metadata value. |
| $unique | boolean | Optional, default is false. Whether the same key should not be added. |
| return | boolean | False for failure. True for success. |
public function add_meta($level_id = 0, $meta_key = '', $meta_value, $unique = false)
{
return add_metadata('level', $level_id, $meta_key, $meta_value, $unique);
}