Question

Hello,

I want to allow only numbers in $_GET method. I use this is in pagination to secure

$page = (isset($_GET['page']) && is_numeric($_GET['page']) ? (int) $_GET['page'] : 1);

If I enter special characters or alpha, it returns error

This should not be possible:

index.php?page=AA and
index.php?page='!@#$%^&*()

Only this:
index.php?page=1 or 2 ...

Anyone has a solution for this? 🙂 thanks in advance…

Answer 1

I would suggest the use of filter_input()

$page= filter_input ( INPUT_GET, 
                      'page', 
                      FILTER_VALIDATE_INT,
                      array('options'=>array('min_range' => 1)));
if(!$page)$page=1;