prevent direct url access to php file

Question

I have a php file say "check.php" in my website and it is executed when a form is submitted.

say my website is "myweb.com" and the php file is in a directory "PHP"

I want to prevent direct url access to the "check.php" file i.e. if anyone types the url "myweb.com/PHP/check.php" ,then the php file should not be executed and it should return a error message instead.

I tried to prevent the access by setting a rule in .htaccess ,but it blocks the php even when I try to submit the form.

.htaccess rule :

RewriteEngine on 
RewriteCond %{THE_REQUEST} \.php[\ /?].*HTTP/ 
(.*)\.php$ /index.html [L] 

Is there any possible way to do it ?

Answer 1

Try this one too. Past in the top of check.php

<?php debug_backtrace() || die ("<h2>Access Denied!</h2> This file is protected and not available to public."); ?>

An Access Denied will be presented when the file is access directly in the url