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I have a problem with ldap connection. $hostname="ldap://sub.domain.com"; $ds=ldap_connect($hostname, 389); ldap_set_option ($ds, LDAP_OPT_REFERRALS, 0) or die('Unable to set LDAP opt referrals'); ldap_set_option($ds, LDAP_OPT_PROTOCOL_VERSION, 3) or die('Unable to set LDAP protocol version'); if ($ds) { $dn = "OU=Users,OU=ro,DC=sub,DC=domain,DC=com"; if (!($ldapc=ldap_bind($ds))) { echo "<p>Error:" . ldap_error($ds) . "</p>"; echo "<p>Error number:" . ldap_errno($ds) . "</p>"; echo "<p>Error:" . ldap_err2str(ldap_errno($ds)) . "</p>"; die; } $attributes = array("sn"); $filter = "(sn=*)"; $result = ldap_search($ds, $dn, $filter, $attributes); echo $result; $info = ldap_get_entries($ds, $result); for ($i=0; $i < $info["count"]; $i++) { echo $info[$i]["ou"][0]; } } else { echo "<h4>Unable to connect to LDAP server</h4>"; } ldap_unbind($ds); The ldap any anonymous connection works because I test it in a AD browser and everything is fine. In this code it stops at ldap_search($ds, $dn, $filter, $attributes); I receive the warning: Warning: ldap_search(): Search: Operations error in ..\index.php on line 38 I don't really know what can be the cause of this error, I appreciate your help.

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