Error when doing Search Page

I have my source code in my search page following:







When I test the search page, there is error message



Besides that, when I click on another paging such as page 2, It turn out nothing shown up.



Then, I follow the hint from error message, If I try to remove session_start from library/config.php, it will give me more errors.



I post my problems on some forums to achive some solutions. "phpacademy.info"



And get a advise.



and another one in forum "vninformatics.com"



and the solution.



After I get the advise, I move up the code line of "include/config.php" on the top of the page.



and test :



There is no error message but error paging is still appearing, when I click on page 2 for example, the page turns out nothing again:


I noticed that the address bar which is

http://yoongda.com/search.php?page=2&

is missing search value, so address bar shoud show the link:

http://yoongda.com/search.php?page=2&search=a

and I got the solutions from a forum "dynamicdrive.com"




I added $_SESSION variable in search page:



and in common1 page:



I also changed my code following the advise in common1.php:

$strGet ='search'



and add the function "$_SESSION" in the paging links:




And I test my work:



It is working successfully.