hello dear DenisChenu i try to understand - this is a workaround !? I need to have a working workaround that gives me the option to test the whole setup here.

look forward to hear from you

I setup a lot of instance on different server (linux or windows), never see this issue.

Then you have somethink specific in you server . I don't klnow what you do.

It's not a workaround : if you need to use a socket : you can.
www.php.net/manual/en/pdo.connections.php
www.php.net/manual/en/ref.pdo-mysql.conn....connection-examples

well if i chose this

/var/run/mysql/mysql.sock

instead of localhost - all runs nicely

many thanks for all your support

keep up the project - it rocks

OK,

I have some server where, when you put mysql:localhost it was updated automatically to /var/run/mysql/mysql.sock

I don't remind where this is managed, but seems this is the issue here : you mysql:localhost are redirected to bad place …