As of MySQL 5.7.7, this is what the documentation recommends for Red Hat Enterprise Linux 7, Oracle Linux 7, CentOS 7, SUSE Linux Enterprise Server 12, Fedora 24 and 25:
Build process completed successfully
Installing '/opt/plesk/php/7.1/lib/php/modules/dbase.so'
install ok: channel://pecl.php.net/dbase-7.0.0beta1
configuration option "php_ini" is not set to php.ini location
You should add "extension=dbase.so" to php.ini