Even though I am unfamiliar with LDAP, I see that you have not received any useful responses, so I will try to help.

Is there a schema somewhere that declares whether an attribute is single-valued or multi-valued-with-one-entry? That would be the easiest solution, but, as I said, I am unfamiliar with LDAP so that may be the "obvious answer" that turns out to be useless.

The other option is to simply try something like: (assuming $ldap->modify dies when used incorrectly)

unless (eval {$ldap->modify($dn, add => {%attrs});1})
  { $ldap->modify($dn, replace => {%attrs}) }

[download]

This could get a bit messy if you are trying to update multiple attributes, some of which are multi-valued. Then you will need to wrap the above in a loop and handle each attribute separately.

In reply to Re: net::ldap ->singel valued attributes and multivalued attributes by jcb
in thread net::ldap ->singel valued attributes and multivalued attributes by docsnyder

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