[PHP] Secured file_get_contents (getting local .txt files)

     _____ _____ _ _____ _____         _____ _____ _____ _____
 ___|     | __  |_|  _  |_   _|___ ___|_   _|   __|  _  |     |
|_ -|   --|    -| |   __| | | |- _|___| | | |   __|     | | | |
|___|_____|__|__|_|__|    |_| |___|     |_| |_____|__|__|_|_|_|
|s C R i P T z - T E A M . i N F O|████████████████████████████

                             - iNfO -

[PHP] Secured file_get_contents (getting local .txt files)

                             - NOtIcE -

Create new file index.php in folder /test/ -->
<?php
error_reporting(0);
if (isset($_GET['page'])) {
    define("CRYPT", "d5a79b55d72652537e9dcc6a4df1ece2");
    $y = $_GET['page'];
    $x = file_get_contents('./pages/' . $y . ".txt");
    if (strstr($x, CRYPT) == TRUE) {
        echo $x;
    } else {
        echo "Failed.";
    }
}
?>

Create new file test.txt in folder /test/pages/ -->
<!-- d5a79b55d72652537e9dcc6a4df1ece2 -->
You can see this!

Create new file omfgwtf.txt in folder /test/pages/ -->
You can not see this, since CRYPT CODE is missing.

Now run -->
Then run /test/index.php?page=test --> OUTPUT: You can see this!
Then run /test/index.php?page=omfgwtf --> OUTPUT: Failed. You will not see the content of it!