Php jump with absolute path

Php uses the absolute path to jump to the problem. The current path of the php file is "127.0.0.1/myproject/file/. php "I wrote a hyperlink to jump to a file in another folder. it can be successfully redirected using a relative path. if you write an absolute path echo & nbsp;" & lt; a & nbsp; href = '2017. 0.0.1/myproject php jump with absolute path
The current php file path is "127.0.0.1/myproject/file/a. php"

I wrote a hyperlink to jump to a file in another folder. it can be successfully redirected using a relative path. if it is written as an absolute path below

Echo "tiao ";

As a result, the current path is connected to an absolute path and the Jump fails. how can this problem be solved?
How can I use an absolute path to complete the jump?
------ Solution --------------------
Echo "tiao ";
Try
------ Solution --------------------
Tiao