symfony官方文档常用知识点:

• symfony自带的几个内核事件 https://symfony.com/doc/current/reference/events.html#kernel-events

• symfony自带的service-tag https://symfony.com/doc/6.2/reference/dic_tags.html#security-voter

• symfony的form option的配置 https://symfony.com/doc/current/reference/forms/types/form.html#allow-extra-fields