Question

On my server I have directory “reset”, which contains 3 files index.php , 1.php, 2.php.
index.php includes the following code:

if (condition) {
        include_once "1.php";
    } else {
        include_once "2.php";
    }

User still can open files for inclusion directly from directory reset/1.php
How to automatically redirect user from this files to index.php ?

Answer 1

<?php
//if current executing file is not 1.php
if(strpos($_SERVER['SCRIPT_FILENAME'], "1.php") === FALSE){
    header("Location: index.php");
}
?>

If in the filename of script currently executing, 1.php is found, redirect to index.php.

http://codepad.org/dE0zplUN Note, in codepad.org sample, I have changed 1.php to t.php, because as of writing this, codepad.org site uses this file name as the main/executing script.
Edit this to any filename you required.

You could also have a look at $_SERVER[‘PHP_SELF’].