Why isn't there some definition of common practice in the thinkphp project?

Why are there no regular definitions in the Thinkphp project?
Look at a project written by someone else with thinkphp, on the left of the diagram, after opening the portal file, found that there is no regular play in the definition of some files deployed in the directory,
It seems that the actual use of the play and the general play is not the same, I do not know how to play it
My question is, if it has been deployed and then deleted, then after entering the portal file, does it still require the catalog to be generated? Because there's such a judgment in the frame.

------to solve the idea----------------------
Your code is not finished.

