RewriteEngine On
RewriteCond %{REQUEST_METHOD} ^GET$
RewriteRule ^people$ controllers/people.php?action=index
RewriteCond %{REQUEST_METHOD} ^POST$
RewriteRule ^people$ controllers/people.php?action=post
RewriteCond %{REQUEST_METHOD} ^DELETE$
RewriteRule ^people/([0-9]+)$ delete.php?id=$1
RewriteCond %{REQUEST_METHOD} ^PUT$
RewriteRule ^people/([0-9]+)$ update.php?id=$1