PHP ldap_bind错误

Question

I am using xampp on windows 7. I uncomment the ;extension=php_ldap.dll to extension=php_ldap.dll in php.ini. then i copy the libeay32.dll, libsasl.dll, ssleay32.dll from C:\\xampp\\php to C:\\Windows\\system. and restart apache.

I think all is done well, here is the result in phpInfo function

LDAP Support - enabled

RCS Version - $Id: 4db15e5bb92af06390fd31ab784837ab21a3d2ce $

Total Links - 0/unlimited

API Version - 3001

Vendor Name - OpenLDAP

Vendor Version - 20433

SASL Support - Enabled

Here is my code

<?php
//using ldap bind anonymously
//connect to ldap server
$ldapconn = ldap_connect("ldap.example.com")
    or die("Could not connect to LDAP server.");

if ($ldapconn) {
    // binding anonymously
    $ldapbind = ldap_bind($ldapconn);

    if ($ldapbind) {
        echo "LDAP bind anonymous successful...";
    } else {
        echo "LDAP bind anonymous failed...";
    }
}
?>

I took the code here php.net/manual And the error massage is

ldap_bind(): Unable to bind to server: Can't contact LDAP server in

Answer 1

There seems to be an issue with connecting to your LDAP-Server from your webserver. Contrary to the naming ldap_connect does not connect to the server but verifies that the given server name looks OK (validates as FQDN without doing an actual lookup). The connection is actually done on calling ldap_bind . Therefore the connection issue first surfaces on the ldap_bind.

Try to bind to your LDAP-Server from the machine the webserver is running on with a different LDAP-Tool like fi. jXplorer. If that doesn't work, there seems to be a network-issue hindering the LDAP-connection.

Just to verify: You do have an LDAP-Server running and are not actually trying to literally bind to ldap.example.com ?