Include_once函数使用php和jquery load函数返回两次

I am using include_once('sessions.php') on 2 php files but both these files are returning the output of the sessions.php page and i am getting the result of sessions.php twice.

The 2 files are message.php and get.php.

so, i get all the results from get.php in message.php page.

In message.php file i am loading get.php results as:

$("#message").load("get.php");

But I need to include("sessions.php") in both my files.
I thought only to include("sessions.php") on my get.php page and not on message.php, but this is also not validating properly in message.php page.

If any one can help me out, I would be thankful.