The correct understanding and usage of include in thinkphp

Template introduced with include is a very flexible layout scheme.
But because the official tutorial is not very clear, it often causes misunderstandings. So let’s talk about two sentences:
1. First, the difference between the template introduced by include and the template corresponding to action.
This is the most confusing. The template corresponding to the action is bound to the action.
Does the include template have anything to do with action?
include template is just a piece of html and can be placed anywhere. Its parameters will not be parsed by the action that defines it, but the action that uses it affects its parsing.
If you have used js templates, it will be easy to understand.
The confusion is that include can be referenced using the pattern of the controller /method. This just means that the view of the action controller can also be used as a template. But only the html code in the view is used. The code in the action will not be executed! 2.include data source.
The data source of include is not action, but is passed in in the include tag, such as the example in the official tutorial:

<include file="Public/header" title="ThinkPHP框架" keywords="开源 WEB开发框架" />

variables Passed to the include template, these two variables are not provided by the action.
Conclusion:
include template is independent and can be called anywhere. Has the function of receiving parameters.
Remember; whoever uses it will pass the parameters!
Using the action view as an include template is just convenient for using ready-made html. When the view corresponding to the action is introduced as an include template, it has been transformed into an independent HTML fragment and has nothing to do with the action. So the official statement:
Note that including template files will not automatically call the controller's methods, which means that variable assignments in other included template files need to be completed in the current operation.
If a variable is included in the include, the source is also the action currently using this include, not the action that is the source of the view! That action will not be executed! Now you can understand.
So, the key to understanding the include template is that it is an organization of many reusable html fragments. It doesn't matter whether these fragments are independent HTML or views in the action.
As for my approach, I put it under the public folder where css, img, and js are placed. Add a htmltpl folder. When quoting,

<include file="./Public/htmltpl/abc.html" />

is a simple understanding. I don’t know if it is explained clearly.

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