PHP redirecting to a page problem
<p>I 'm designing a Treasure hunt kind of online quiz.Totally there are 10 files namely 1.php , 2.php..10.php .Only if the player answers the question on the current page he must be redirected to next page ,but in my case if the player modifies the URL he can view the next question.how do i prevent this.thanks for your help.</p>
