Online PHP editor | output for UOJgN

<?php $server_path = "/test1/test2/"; echo rtrim($server_path , '/');echo "\n\n"; $server_path = str_replace(array('/', '\\'), '/', $server_path); var_dump($server_path); $next_server_path = substr($server_path, 0, strrpos($server_path, '/')); var_dump($next_server_path); echo "\n\n"; $server_path = "/test1/test2"; echo rtrim($server_path , '/');echo "\n\n"; $server_path = str_replace(array('/', '\\'), '/', $server_path); var_dump($server_path); $next_server_path = substr($server_path, 0, strrpos($server_path, '/')); var_dump($next_server_path); echo "\n\n"; $server_path = "/test1"; $server_path = str_replace(array('/', '\\'), '/', $server_path); var_dump($server_path); $next_server_path = substr($server_path, 0, strrpos($server_path, '/')); var_dump($next_server_path); echo "\n\n"; $server_path = ""; $server_path = str_replace(array('/', '\\'), '/', $server_path); var_dump($server_path); $next_server_path = substr($server_path, 0, strrpos($server_path, '/')); var_dump($next_server_path);