Comment # 3 on bug 1226390 from Andreas Stieger

(In reply to Joerg Rohrer from comment #0)
> As the summary says. A "zypper --releasever=15.6 dup" removes php81 and
> installs php7.

openSUSE Leap 15.6 ships only one version for PHP 7 and 8 each. Replace php81
with php8.

> Please update or add PHP 8 and later to repos.

Not needed see below.

$ zypper search -t package --match-exact -s php7 php8
Loading repository data...
Reading installed packages...

S | Name | Type    | Version              | Arch   | Repository
--+------+---------+----------------------+--------+----------------
  | php7 | package | 7.4.33-150400.4.34.1 | x86_64 | Main Repository
  | php8 | package | 8.2.10-150600.1.9    | x86_64 | Main Repository

(In reply to Joerg Rohrer from comment #1)
> my current repos, maybe there is something wrong in my repos too.

There is. You are running a mix of 15.5 and 15.6 (server_mail)

That is also probably what is pulling in an unexpected packages.

Please make sure your server_mail repository is using the ${releasever}
placeholder, and that you have enabled either automatic refresh on the
repositories or performed a manual forced refresh. In any case please add
reproduction steps after your verification.