accessing a class from within a class

how do I access a class from within a class?

I'll give an example that wont work, but it's what I want to do

PHP Code:

---

class db{

function connect(){
//connect to db
}

function query(){ //query }

...

}

$Db = new db();
$Db->connect();

class wut{

function whatever(){

$Db->query($sql);

}}

$woot = new wut();
$woot->wut(); 


---

I've not tried it, but could I use db::query($sql) in the second class?
but, wouldn't I have to connect to the database via db::connect again since it's static or w/e?

edit
would doing something like

PHP Code:

---

//in class two

var $h;

$h->query($sql);

//instead of just $woot->wut();
$woot->h = $Db;
$woot->wut(); 


---

work?

my schools blocked my host, so I can't find out :(

A class is not an object. A class is an abstract type. An object is a concrete instance of a class. You can't access a class -- you access an object.

Try this:

PHP Code:

---

class DB
{
  function connect() {
    //connect to db
  }
  function query() {
    //query
  }
}

class Wut
{
  var $db;
  function Wut($db) {
    $this->db = $db;
  }

  function whatever() {
    $this->db->query($sql);
  }
}

$db = new DB();
$db->connect();

$woot = new Wut($db);
$woot->wut(); 


---

that worked
thanks