Form combined selections..Help

[andrw123]

Form combined selections..Help
i used session to pass the values along it working fine i can echo and see the values on difference pages but i cannt combine them
i want to do is if you select something from page1 and then something else on page2 and 3 and so on...at the end it will base on the combination of what have been selected on all the pages and will display output to the screen

select "a" from page1 and "b" from page 2 then "c" from page 3..on the last page
i tried to combine the selection like this but it doesnt work

if (($_POST['a'] == 'true') && ($_POST['a'] == 'true') || ($_POST['c'] == 'true')) {
echo 'somthing here';
    } 

thanks

[Weedpacket]

When you get the form from page 3 it won't contain the information from pages 1 or 2 so you won't find it in $POST, but in $SESSION.