cli.php

<?php 
//cli command entrypoint

include 'conf.php';

/**
 * 
use any cli library
*/

conf.php

<?php

$container = new \Slim\Container();

/**
 * 
define services 

*/  

web.php

<?php
//web request entrypoint

include 'conf.php';

$app = new Slim\App($container);

/**
add middlewares
defines routes 
...
*/

$app->run();