CODEWITHSUNDEEP
php
Kiran B
Kiran B

Reputation: 73

PHP redirecting to a page problem

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.

Upvotes: 1

Views: 103

Answers (5)

Kiran B
Kiran B

Reputation: 73

I solved the problem by storing the number of questions answered in database and redirecting to that page using header command.

Upvotes: 0

Michael Berkowski
Michael Berkowski

Reputation: 270775

Store a session variable when a question is completed. If the session variable's value is less than the number of the question being accessed, deny access.

session_start();
// just finished question 5, for example
// The user may now access question 6
$_SESSION['question'] = 6;


// User attempts to access a question:
// Suppose $current_question is 7
if ($_SESSION['question'] < $current_question) {
  // deny
}
else {
  // display the question
}

Upvotes: 1

secretformula
secretformula

Reputation: 6432

You could pass a random id along with the client when you redirect him to the next page and then verify that random id when he arrives at the next page. I guess this would be the same thing as using a php session. http://us.php.net/manual/en/book.session.php

Upvotes: 0

Anh Pham
Anh Pham

Reputation: 5481

Just change them to unpredictable names, like kiran.php instead of 1.php, likeyouknowit.php instead of 2.php, etc.

Upvotes: -1

ceejayoz
ceejayoz

Reputation: 180177

Store the highest page number the user has accessed in a session variable.

i.e. on 4.php, you'd do $_SESSION['page'] = 4;

On 5.php, you'd check that $_SESSION['page'] is at least 4.

Do note that you'll need to have called session_start() before accessing $_SESSION on all pages that use sessions.

Upvotes: 2

Related Questions