After submission of form i have written
print_r($_REQUEST);
exit;


the output is
Array ( [phpbb2mysql_data] => a:2{s:11:\"autologinid\";s:0:\"\";s:6:\"userid\";i :-1;} )


how is it possible?please give me a solution.

OK, I'm struggling a little bit here with what your problem is, it would help a lot if you can explain a bit more.

What are you expecting as the result of the print_r command?

It's showing all the _REQUEST data that's been submitted to the script.

Are you modifying a PHPBB script? Can you show us your code?

I hate to see posts go unanswered but without more info I think we'll all struggle to help you.

$_REQUEST will print $_GET and $_POST to get spesific result you must tell the script like $_REQUEST['phpbb2mysql_data']