title: htaccess that removes trailing slash, php extension, and upper case
body: <p>I am trying to write an <code>.htaccess</code> file that will do three things:</p>
  
  <ol>
  <li>Change uppercase letters to lowercase letters in a URL (i.e. <code>domain.com/Redirect</code> is changed to <code>domain.com/redirect</code>)</li>
  <li>Load php pages without requiring the extension (i.e. <code>domain.com/redirect.php</code> is changed to <code>domain.com/redirect</code>)</li>
  <li>And remove trailing slashes (i.e. <code>domain.com/redirect/</code> is changed to <code>domain.com/redirect</code>)</li>
  </ol>
  
  <p>Essentially, I'd like our site to be able to change both <code>domain.com/Redirect.php</code> and <code>domain.com/Redirect/</code> to <code>domain.com/redirect</code>.</p>
  
  <p>What I have so far works for uppercase letters and extensions, but not for trailing slashes. If I go to <code>domain.com/redirect/</code>, it instead changes the URL to <code>domain.com/redirect/.php</code>.</p>
  
  <p>Here's what I have:</p>
  
  <pre><code>RewriteEngine On
  RewriteBase /
  
  # If there are caps, set HASCAPS to true and skip next rule
  RewriteRule [A-Z] - [E=HASCAPS:TRUE,S=1]
  
  # Skip this entire section if no uppercase letters in requested URL
  RewriteRule ![A-Z] - [S=28]
  
  # Replace single occurance of CAP with cap, then process next Rule.
  RewriteRule ^([^A]*)A(.*)$ $1a$2
  RewriteRule ^([^B]*)B(.*)$ $1b$2
  RewriteRule ^([^C]*)C(.*)$ $1c$2
  RewriteRule ^([^D]*)D(.*)$ $1d$2
  RewriteRule ^([^E]*)E(.*)$ $1e$2
  RewriteRule ^([^F]*)F(.*)$ $1f$2
  RewriteRule ^([^G]*)G(.*)$ $1g$2
  RewriteRule ^([^H]*)H(.*)$ $1h$2
  RewriteRule ^([^I]*)I(.*)$ $1i$2
  RewriteRule ^([^J]*)J(.*)$ $1j$2
  RewriteRule ^([^K]*)K(.*)$ $1k$2
  RewriteRule ^([^L]*)L(.*)$ $1l$2
  RewriteRule ^([^M]*)M(.*)$ $1m$2
  RewriteRule ^([^N]*)N(.*)$ $1n$2
  RewriteRule ^([^O]*)O(.*)$ $1o$2
  RewriteRule ^([^P]*)P(.*)$ $1p$2
  RewriteRule ^([^Q]*)Q(.*)$ $1q$2
  RewriteRule ^([^R]*)R(.*)$ $1r$2
  RewriteRule ^([^S]*)S(.*)$ $1s$2
  RewriteRule ^([^T]*)T(.*)$ $1t$2
  RewriteRule ^([^U]*)U(.*)$ $1u$2
  RewriteRule ^([^V]*)V(.*)$ $1v$2
  RewriteRule ^([^W]*)W(.*)$ $1w$2
  RewriteRule ^([^X]*)X(.*)$ $1x$2
  RewriteRule ^([^Y]*)Y(.*)$ $1y$2
  RewriteRule ^([^Z]*)Z(.*)$ $1z$2
  
  # If there are any uppercase letters, restart at very first RewriteRule in file.
  RewriteRule [A-Z] - [N]
  
  RewriteCond %{ENV:HASCAPS} TRUE
  RewriteRule ^/?(.*) /$1 [R=301,L]
  
  
  # Don't require .php extension to load php page
  
  RewriteCond %{REQUEST_FILENAME} !-d
  RewriteCond %{REQUEST_FILENAME}\.php -f
  RewriteRule ^(.*)$ $1.php
  
  # Remove trailing slash
  
  RewriteRule ^(.*)/$ $1 [R=301,L]
  </code></pre>