change phpmyadmin port

1. create phpmyadmin.conf

vi /etc/apache2/sites-available/phpmyadmin.conf
~

Listen 99

<VirtualHost *:99>

        ServerName localhost

        <Directory /usr/share/phpmyadmin>
                AllowOverride None
                Require all granted
        </Directory>

        DocumentRoot /usr/share/phpmyadmin

        Include /etc/phpmyadmin/apache.conf

        ErrorLog ${APACHE_LOG_DIR}/phpmyadmin.error.log
        CustomLog ${APACHE_LOG_DIR}/phpmyadmin.access.log combined

</VirtualHost>


2. run the commands
sudo a2disconf phpmyadmin
sudo a2ensite phpmyadmin
sudo systemctl restart apache2.service