(PHP 7 >= 7.3.0)
ldap_mod_add_ext — Add attribute values to current attributes
$link_identifier
   , string $dn
   , array $entry
   [, array $serverctrls = array()
  ] ) : resourceDoes the same thing as ldap_mod_add() but returns the LDAP result resource to be parsed with ldap_parse_result().
See ldap_mod_add()
   Returns an LDAP result identifier or FALSE on error.