Comment # 5 on bug 1205162 from Eric Schirra

(In reply to Petr Gajdos from comment #4)
> (In reply to Eric Schirra from comment #3)
> > No, that is not enough.
> > I had to add the following to /etc/php7/apache2/php.ini:
> > Extension=mysqlnd.
> > Only then did the applications work again.
> 
> To repeat comment 2:
> 
> (In reply to Petr Gajdos from comment #2)
> > However, I am trying to understand how your problem is caused. On a 15.4
> 
> The very same line (extension=mysqlnd) is present already in
> /etc/php7/conf.d/_mysqlnd.ini and in case I add it into
> /etc/php7/apache2/php.ini I could not get anything else than:

Yes. I know that. But for some reason, it doesn't work.

> PHP Warning:  Module 'mysqlnd' already loaded in Unknown on line 0
> [Wed Jan 04 12:22:30.402842 2023] [mpm_prefork:notice] [pid 7666] AH00163:
> Apache/2.4.51 (Linux/SUSE) OpenSSL/1.1.1l PHP/7.4.33 configured -- resuming
> normal operations

I do not get this error message after adding this to php.ini.

> in error_log. So, could you please try to figure out why _mysqlnd.ini is not
> taken into account on your system? Could you try to inspect phpinfo() run
> trough apache sapi? Perhaps also php -m output (warnings/errors)?

No error with php -m.
mysqlnd is shown.
Some application run, some not.
For some application it show "mysqli not found" in log.
Some other apps don't rise up an error.

When i add in /etc/php7/apache2/php.ini:
extension=mysqlnd
all errors gone.

Example which not run: phpMyAdmin
Example for run: nextcloud