I'm trying to write a clean url for my website using the $_SERVER['REQUEST_URI'] in php

I have two webpage link together like when a button is press it leads to the second webpage. my problem is that I'm trying to get a clean url with the .php removed. now my url looks like this

http://localhost/ecommer%20flower%20shop/flowers/list.php

and the second webpage

http://localhost/ecommer%20flower%20shop/flowers/about.php.

i want my url to be like

http://localhost/ecommer flower shop/

http://localhost/ecommer flower shop/about

the code i have written for this in index.php

<?php  if ($_SERVER['REQUEST_URI'] == '/') {     # code...     return include_once './flowers/list.php'; }  if ($_SERVER['REQUEST_URI'] == '/about') {     # code...     return include_once './flowers/about.php'; } 

but this is not working and gives blank page, i don't know my mistake or what to do to fix code

Answers 1: of I'm trying to write a clean url for my website using the $_SERVER['REQUEST_URI'] in php

Answers 2: of I'm trying to write a clean url for my website using the $_SERVER['REQUEST_URI'] in php

RewriteEngine On RewriteRule (.*)/about$ ($1)/about.php RewriteRule (.*)/list$ ($1)/list.php