从网址中删除文件扩展名

I have some urls in my website like this..

http://www.mydomain.com/about.php
http://www.mydomain.com/contact.php
http://www.mydomain.com/signup.php
http://www.mydomain.com/testimonials.php ...... and much more 

Now I am trying to convert above urls to user friendly url

http://www.mydomain.com/about
http://www.mydomain.com/contact
http://www.mydomain.com/signup
http://www.mydomain.com/testimonials

This is code in my .htaccess file that I am tried so far. But it doesn't work.

# Add trailing slash to url
  RewriteCond %{REQUEST_FILENAME} !-f
  RewriteCond %{REQUEST_URI} !(\.[a-zA-Z0-9]{1,5}|/|#(.*))$
  RewriteRule ^(.*)$ $1/ [R=301,L]

# Remove .php-extension from url
  RewriteCond %{REQUEST_FILENAME} !-d
  RewriteCond %{REQUEST_FILENAME}\.php -f
  RewriteRule ^([^\.]+)/$ $1.php 

Anyone can help me to remove .php etension from my urls?? Thank you.

Get rid of the conditions you are using and instead use the below 2 lines in your htaccess file

RewriteEngine On # Turn on the rewriting engine
RewriteRule   ^whatever/?$   whatever.php  [NC]

This will work even if user types a forward slash after the name or not

If you want to make them dynamic, here's a good tutorial on that

for a proper implementation so as not cause confusion during deployment if you dont have access to the htaccess file of your server or if it is override. You can consider a library like toro-php http://toroweb.org/ for easy routing.