LDAP configuration in Linux server

Hello team,
I have a problem related to the LDAP configuration. I just installed Dolibarr on Linux server.
When I launch the LDAP module, I receive the message: “The LDAP functions are not available on your PHP”.
Any advice will help me, thanks.

Hello,

You need to install php-ldap extension : Debian -- Details of package php-ldap in buster