PHP LDAP Userlogin

Hi All,

I am Using OpenLDAP .. they already got user and password(ldif files) in the System.

the only think when user logged in i need to check that username and password in LDAP Server. i need the code how to do it..

I am using PHP

$ldap=ldap_connect("localhost") or die("no connection for LDAP");
$password=crypt($password);


if($ldap){
$bind_results=ldap_bind($ldap,"uid=" . $username . ", ou=staff,o=name.com", $password) or die("no user");

$dn = "ou=staff,o=name.com";
$filter = "(|(uid=" . $username . "*))";

$nds_stuff=array("cn","Manager");
$results=ldap_search($ldap, $dn, $filter, $nds_stuff);
$info=ldap_get_entries($ldap,$results);

if($info["count"] != 0){
header("Location: /index.php");
}
else{
header("Location:../login.php");
}
ldap_close($ldap);
}
else{
die("no connection for LDAP");
}

What I do to verify that someone has an account is first search for there uid (or cn or whatever) then log in as them with there userdn(which you get after searching for them) and password, each user should be able to log in to there own account and read everything in it, but shouldn't be able to write to it.