Doesn't load, many preg_match() and other warnings about phpldapadmin HOT 3 CLOSED

Looks like a packaging issue, your pcre package was built using a more recent version that what you have installed. You will have to figure out how to get the correct versions installed, there is nothing PLA can do for you here.
PCRE2Project/pcre2#56

from phpldapadmin.

To add to this, make sure your php installation comes from a single repository (don't mix php packages coming from ppa and debian repos) and all versions for whichever you use are the latest.

from phpldapadmin.

pcre package was built using a more recent version that what you have installed.

  Thanks, is that what the unrecognised compile-time option bit(s) at offset 0 is all about?  Yes I see preg_match() is classified as a pcre function.  I installed libpcre3 but then read something about libpcre2-16-0, libpcre2-8-0, and libpcre2-32-0 required so I installed those.  If that was the fix, then seems those should have already been installed as dependencies.
  Services had to be restarted too, for some reason, since that's usually automatic during upgrades if needed, maybe that was the real problem.  I found checkrestart program and indicated Apache and Rsyslog were both marked as needing restarts.
  Someone dropped the ball somewhere!  Definitely wasn't me! 😛  Everything is working fine now though.  Thanks for the hints.  No I keep the servers pretty boring with Debian stable repos only, which was recently upgraded so maybe that played a role too.  My laptop is another story, however, with testing as the default release but with unstable, experimental, stable and backports repos mixed in, it runs great!

from phpldapadmin.