How does the sub-framework obtain the variables on the home page?

How does the sub-framework obtain the variables on the home page, for example, a login page & lt; body & gt; & lt; forpolichod = & quot; post & quot; action = & quot; mission. php & quot; & gt; Username & lt; inputtype = & quot; text & quot; size = & quot; 15 How to obtain variables on the home page
For example
First, a login page




After submission
Mission. php
Available
Two variables: name and password

There is a sub-framework in mission.




How can I make note. php in the sub-framework get the two variables "name" and "password" obtained by mission. php?

------ Solution --------------------
After successful login,
Store the value in the SESSION.



------ Solution --------------------
Discussion

After successful login,
Store the value in the SESSION.

------ Solution --------------------
No
$ _ Session ['username']
Yes
$ _ SESSION ['username'];