PHP无法匿名绑定到LDAP

Question

Problem is that I can connect LDAP through PHP but I cannot bind to it.

In Apache Directory Studio I can connect and bind without any problem but in PHP result is always "FAIL".

How to bind to LDAP with PHP?

<?php

$ldaphost = "ldaps://server.net";
$ldapport = 636;

$ldapconn = ldap_connect($ldaphost, $ldapport);

if($ldapconn){
    echo 'Connected';

    $ldapbind = ldap_bind($ldapconn);


    if($ldapbind){
        echo "OK";
    } else {
        echo "FAIL";
    }
}

Answer 1

Try to set the protocol version

<?php

// Anonymous connection

$ldaphost = "ldaps://server.net";
$ldapport = 636;

$ldapconn = ldap_connect($ldaphost, $ldapport)
    or die("Cannot connect to LDAP server.");

if ($ldapconn) {

    echo 'Connected';

    // set protocol version
    ldap_set_option($ldapconn, LDAP_OPT_PROTOCOL_VERSION, 3);

    // anonymous identification
    $ldapbind = ldap_bind($ldapconn);

    if ($ldapbind) {
        echo 'OK';
    } else {
        echo 'FAIL';
    }

}

?>