What's the best way to only allow a PHP file to be included?

Question

I want to make sure people can\'t type the name of a PHP script in the URL and run it. What\'s the best way of doing this?

I could set a variable in the file that wi

Answer 1

One way I've seen a lot is to create a variable that has to be present in every included file and check first thing in every include:

if(!isset($in_prog)){
exit;
}