查看来源（核心文件、，wp-includes/option.php) 您始终可以找到目标挂钩标签：

add_action(\'added_option\', \'wpse230212_callback_add\', 10, 2);
add_action(\'updated_option\', \'wpse230212_callback_update\', 10, 3);

function wpse230212_callback_add( $option_name, $option_value ) {
    // do stuff on add_option
}

function wpse230212_callback_update( $option_name, $old_value, $option_value ) {
    // do stuff on update_option    
}