yo lo tengo asi configurado...
unset($CFG);
global $CFG;
$CFG = new stdClass();
$CFG->dbtype = 'mariadb';
$CFG->dblibrary = 'native';
$CFG->dbhost = 'localhost';
$CFG->dbname = 'moodle';
$CFG->dbuser = 'root';
$CFG->dbpass = 'nomelase';
$CFG->prefix = 'mdl_';
$CFG->dboptions = array (
'dbpersist' => 0,
'dbport' => 3306,
'dbsocket' => '',
'dbcollation' => 'utf8mb4_spanish2_ci',
);
$CFG->wwwroot = 'http://localhost/moodle';
$CFG->dataroot = 'D:\\xampp_moodle\\moodledata';
$CFG->admin = 'admin';
$CFG->directorypermissions = 0777;
require_once(__DIR__ . '/lib/setup.php');


