ask for server address

You should take into account that not all installations use an url path like the one in your script: _**phpMyAdmin**_

For example, my provider has installed it on https://my.server.domain/database/phpmyadmin
(see subpath **_database_**, plus lowercase letters **_phpmyadmin_**)

So I recommend you fix the script to ask server full address, instead of using server IP/port