Hello, today I was doing an upgrade (new install) of my now a little outdated Debian 8 -> Debian 10 w/ PHP7.3

I'm now trying to re-establish a debugger functionality on the server, and I did as usual, as for many years and versions, manual installation of the dbg-php-7.3.so to /usr/lib/php/20180731/ directory, added the [debugger]
debugger.enabled=on
debugger.profiler_enabled=on
debugger.hosts_allow .... lines,

restarted the apache server, but somehow the debugger does not register/start...

The phpinfo page just shows:

"Zend Engine v3.3.4, Copyright (c) 1998-2018 Zend Technologies
with Zend OPcache v7.3.4-2, Copyright (c) 1999-2018, by Zend Technologies"

Do you have any suggestions?

Best regards,

Jure

it's possible for different reasons:
- wrong module picked (intended for different php version, different platform, different cpu mode such as 32 vs 64 or thread safe vs non-thread safe)
- wrong file access rights so the php binary can't load it
- wrong settings in php.ini -- such as you forgot to add extension=dbg-php-7.3.so or zend_extension=/path/to/dbg-php-7.3.so -- this is what you didn't show in your post