calling a class within another

I am using a database abstraction class, and need to call it from within my other classes, eg user. But how best do I do it?

If I initialise the database class thus:

$db = new database();

and then in the user class do something like

$db->query("query for some user details");

Where should I initialise the database class from?

Cheers

Paul

inside the same method where you call the query. else have a class attribute, and create the instance of the db class in the constructor. e.g.

function Constructor() {
   $this->db = new database();
}

// then in the method
function method() {
   $this->query("blah");
}

Actually, thats wrong. This is a better way to do it.

class user_class extends database_class {
function user_method() {
$this->database_class_function(...)
}
}

Daarius wrote:

inside the same method where you call the query. else have a class attribute, and create the instance of the db class in the constructor. e.g.

function Constructor() {
   $this->db = new database();
}

// then in the method
function method() {
   $this->query("blah");
}

well its not wrong. your solution is only if you are inhereting.

If the user class is using the database class then why wouldn't you do it that way?