<?php
$user=$_POST['username'];
$pass=$_POST['password'];
$server=$_POST['server'];

$ds=ldap_connect($server);
if($ds){
  ldap_set_option($ds, LDAP_OPT_PROTOCOL_VERSION, 3);
  $r=ldap_bind($ds, $user, $pass);
  if($r){
        session_start();
        $_SESSION["username"]=$user;
        $_SESSION["server"]=$server;
        $_SESSION["password"]=$pass;
        $_SESSION["auth"]="Y";
        echo "Login successfully.<br>";
        echo "1. <a href='search.php'>search users</a> <br>";
        echo "2. <a href='add.html'>add new users</a><br>";
    ldap_close($ds);
  }else{    echo "can not login";  }
}else{  echo "unable to connect";}
?>