$ _ Server problem. Why can't I disable index. php if url rewriting fails?

$ _ Server problem. Why can't I disable index. php's host url rewriting?
$ _ SERVER ['path _ info'] will disappear,
Instead
$ _ SERVER ["ORIG_PATH_INFO"]
As a result, the removal of index. php will become invalid based on $ _ SERVER ['path _ info '].
I just discovered this phenomenon, but I don't understand why?

Reply to discussion (solution)

PATH_INFO is missing but ORIG_PATH_INFO is there with the information PATH_INFO was supposed to have.

So the php code had to be changed to check for $ _ SERVER ['orig _ PATH_INFO '] when $ _ SERVER ['path _ info'] is absent

See the last section of http://www.binarytides.com/path_info-orig_path_info-apache-and-php/

PATH_INFO is missing but ORIG_PATH_INFO is there with the information PATH_INFO was supposed to have.

So the php code had to be changed to check for $ _ SERVER ['orig _ PATH_INFO '] when $ _ SERVER ['path _ info'] is absent

See the last section of http://www.binarytides.com/path_info-orig_path_info-apache-and-php/
Finally ~
Changing the url as you like,
Moderator also to support ah, personal work http://bbs.youyax.com/

Have you finalized this stuff?

Have you finalized this stuff?
This is probably the case, and there is no function to be developed in the future,