- var_dump: documentation ( source)
<?php
$adapter = 'Dropbox';
$leagueAdapter = '\\League\\Flysystem\\Adapter\\' . $adapter;
var_dump($leagueAdapter);
$leagueAdapter = '\\League\\Flysystem\\' . $adapter . '\\' . $adapter . 'Adapter';
var_dump($leagueAdapter);