hello
my problem regarding php project
the problem is that in project i have 4 page
1.php , 1a.php , 2.php , 2a.php
these four page come at random means from these page any one come first
so i want that if 1.php page come first then 1a.php page come and then conclusion.php.
if 1a.php come first then 1.php page come and then conclusion.php
if 2.php come first then 2a.php page come and then conclusion.php
and if 2a.php come first then 2.php page come and then conclusion.php
please suggest me code for that