Simple PHP routing

.htaccess

RewriteEngine On
#RewriteBase /path/to/dir/
RewriteCond %{REQUEST_FILENAME} -s [OR]
RewriteCond %{REQUEST_FILENAME} -l [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^.*$ - [NC,L]
# add trailing slash
RewriteRule ^.*[^/]$	$0/	[L,R=301]
RewriteRule ^.*$ index.php	[NC,L]

index.php

<?php

$request_uri = explode('/', $_SERVER['REQUEST_URI']);
$script_name = explode('/', $_SERVER['SCRIPT_NAME']);

foreach ($script_name as $key => $value) {
    if ($request_uri[$key] == $value) {
        unset($request_uri[$key]);
    }
}

$commands = array_values($request_uri);

?>

<pre><?php print_r($commands); ?></pre>