I never use the command line but if I look at your code above I think you're creating a plugins folder in the zp-core folder which is not good. Correct me if I'm wrong.

Anyway, I just downloaded and installed the fork too.
It shows up in the backend.
The folder tree of your Zenphoto install should look something like this:
[list]
[]albums
[]backup
[]cache
[]...
[*]plugins

alt

lib-auth.diff
[]lib-auth.php
[/list]
[]ldapLogon.php
[*]... more plugin files/folders

[]...
[]zp-core
[*]zp-data

His email address is on his GitHub overview page.
https://github.com/blind-coder

Indeed, he lists one. However, you need to be loggedin on GitHub to see it.

Hello,
Concerning my tree installation, I have exactly what you mention except that I have no album yet neither backup yet and in the plugin/alt directory, I only have lib-auth.php, not lib-auth.diff

You're correct. In a fresh install there is no backup folder but there should be an albums folder.

If you downloaded the plugin from here: https://github.com/blind-coder/zenLdap you'll see that there are 2 files in the alt folder.
I see now that the lib-auth.diff file is not needed.

Just a silly idea:
The plugin GitHub repository and the downloaded plugin folder are named zenLdap but the plugin itself is named ldapLogon.
Are you looking for the correct plugin name on the backend?

I was looking for the plugin "ldapLogon" and I did not find it.
Is this correct ?

Yes, you should look for the "ldapLogon" plugin.

Hello,
Thanks for your answer.
I have checked for both zenLdap and ldapLogon in the plugin list of zenphoto and none of both are in the list.
Best Regards.

MyAGzenphoto

Having both plugins might be the reason why you don't see any. One is a fork of the other so they both use the same functions which might cause an error. You should see something about that in the error logs I already suggested to review. Remove the older plugin and try again please. The fork one does show up fine for me.

Hello,
here is a part of my log files:
{1085:Mon, 23 Oct 2017 14:26:18 GMT}

WARNING: require_once(/var/www/html/zenphoto/zp-core/../../zp-core/classes.php): failed to open stream: No such file or directory in /var/www/html/zenphoto/zp-core/lib-auth.php on line 44

require_once called from require_once (lib-auth.php [44])

from require_once (auth_zp.php [14])

from require_once (load_objectClasses.php [42])

from require_once (functions.php [33])

from require_once (admin-functions.php [8])

from require_once (admin-globals.php [15])

maybe, this can help.

Best Regards.

MyAGzenphoto