title: Make URL insensitive using URL Rewriting in php
body: <p>I want to make <code>URL insensitive</code> using <code>URL Rewriting</code> in php.<br><br>
  I am new to php so I don't have that much idea but I got some code for <code>URL Rewriting</code> to remove .php from url. I have written it in <code>.htaccess</code> file.<br><br>What changes I will need to do in this code to make URL completely insensitive ?<br><br>
  For example, if url is hello.php then It should work as Hello.php , hello, Hello, HELLO etc.
  <Br><Br>
  <strong>My Code :</strong></p>
  
  <pre><code>RewriteEngine On RewriteCond %{REQUEST_FILENAME} !-f
  RewriteCond %{REQUEST_FILENAME}.php -f
  RewriteRule ^(.*)$ $1.php [NC,L] [NC,L]
  </code></pre>