Changes for Settings.php file
Drupal 7:
$conf['file_temporary_path'] = 'files/tmp';
$conf['file_private_path'] = 'files/private';
$conf['file_public_path'] = 'files/public';
Drupal 8+:
$settings['config_sync_directory'] = '../config/sync';
$settings['file_public_path'] = '../files/public';
$settings['file_private_path'] = '../files/private';
$settings['file_temp_path'] = '../files/tmp';
$settings['trusted_host_patterns'] = [
'^example\.com$',
];