<?php
session_start();
$user=$_SESSION['username'];
$pass=$_SESSION['password'];
$server=$_SESSION['server'];

$ds=ldap_connect($server);
if($ds){
  ldap_set_option($ds, LDAP_OPT_PROTOCOL_VERSION, 3);
  $r=ldap_bind($ds, $user, $pass);
  if($r){
    $sr=ldap_search($ds,"dc=contoso,dc=com", "objectClass=*");
    $info = ldap_get_entries($ds, $sr);
    for ($i=0; $i<$info["count"]; $i++) {
        echo "dn is: ". $info[$i]["dn"] ."<br>";
    }
    ldap_close($ds);
  }else{    echo "can not login";  }
}else{  echo "unable to connect";}
?>