PHPUnit tests: make test-php
'user_ldap.enable_medial_search' => true
By default, when you search for a user your input string will match the beginning of the username. For example, if your LDAP server has "erl" and "peter" as users and you search with "er", only "erl" will be shown.
Enabling this option allows you to overcome this limitation. In the example above, when this option is active, searching for "er" will find both users.
Before enabling this option take into account the following things:
The user_ldap app will check for updated attributes at every user login. Attributes like mail oder quota are retrieved from the ldap server. To save resources on the ldap server, there is a minimum time between two updates for every user. Without modification, the update interval is not more often then 86400 seconds (1 day). This can be modified by setting the app config 'updateAttributesInterval' to any number you like. Setting this value to 0 will update on very login request which can be quiet often and stress your ldap server. Attributes are unlikely to change very often, but waiting a day for a new quota is maybe a little bit long.
To allow modifications of minimum time between checks to one hour (3600 seconds) you can do this via occ:
occ config:app:set user_ldap updateAttributesInterval --value=3600