//{project_root}/includes/autoLoad.php
    function __autoload($classname){
                include "$classname.php";
            }

//just an example from the monolog reference
use MonologLogger;
use MonologHandlerStreamHandler;

$log = new Logger("name");
$log->pushHandler(new StreamHandler(LOGSPATH . '/monolog', Logger::WARNING));


$log->warning('Foo');
$log->error('Bar');

Warning: include(MonologLogger.php): failed to open stream: No such file or directory in {project_root}/includes/autoLoad.php