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<?php $adapter = 'Dropbox'; $leagueAdapter = '\\League\\Flysystem\\Adapter\\' . $adapter; var_dump($leagueAdapter); $leagueAdapter = '\\League\\Flysystem\\' . $adapter . '\\' . $adapter . 'Adapter'; var_dump($leagueAdapter);
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
string(33) "\League\Flysystem\Adapter\Dropbox" string(40) "\League\Flysystem\Dropbox\DropboxAdapter"

preferences:
320.74 ms | 406 KiB | 456 Q