Introduction to how to use include to encrypt paths in PHP

include_once 'include/Base.php';
$path = '';
$url = isBase::decrypt(urlDecode($_SERVER['QUERY_STRING']));
parse_str($ url); //Get the variable passed through url address GET
if(!empty($_POST['path'])){ //Get the variable passed by POST
$path = $_POST['path'];
$path = isBase::decrypt(urlDecode($path));
}
//Resolve the real path
if(empty($path)){
//header("Location: login.php");
exit ;
}
if(!preg_match("/(^http://)|([?|&|=])/",$path)){
//Jump to the path of the actual executed file
chdir(dirname ($path));
include_once basename($path);
exit;
}
?>

index.php is in the same directory as include.inc

include include.inc;
?>

2. Modify the link in the program ()

"index.php?".encrypt("path=/test/test.php&test=123&test2=4321")

3. Modify the POST form in the program Forms are submitted to index.php Add a hidden form in the middle

4. Modify the path of the front-end Html page baseref=/test

5. Friends, please write the encryption and decryption functions yourself.