Class in class... (Opgelost)

<?php
class Session
{

    function var( $database , $var )
    {
        return $database->query("SELECT * FROM table WHERE var = $var");
    }

}

//eerst $database maken
$db = new Database(....);

//session class
$session = new Session();
$session->var( $db , 'blaat' );
?>

<?php
class Session
{
 
    function var( $database , $var )
    {
        return $database->query("SELECT * FROM table WHERE var = $var");
    }
 
}
 
//eerst $database maken
$db = new Database(....);
 
//session class
$session = new Session();
$session->var( $db , 'blaat' );
?>

<?php
class Session
{

    public function var( Database $database , $var )
    {
        return $database->query("SELECT * FROM table WHERE var = $var");
    }

}

//eerst $database maken
$db = new Database(....);

//session class
$session = new Session();
$session->var( $db , 'blaat' );
?>

<?php
class Session
{
 
    public function var( Database $database , $var )
    {
        return $database->query("SELECT * FROM table WHERE var = $var");
    }
 
}
 
//eerst $database maken
$db = new Database(....);
 
//session class
$session = new Session();
$session->var( $db , 'blaat' );
?>

<?php
class Session
{
    private Database $database;
 
    public function __construct($database)
    {
    $this->database = $database;
    }

    public function var($var )
    {
        return $this->database->query("SELECT * FROM table WHERE var = $var");
    }

}

//eerst $database maken
$db = new Database(....);

//session class
$session = new Session();
$session->var( $db , 'blaat' );
?>

<?php
class Session
{
    private Database $database;
 
    public function __construct($database)
    {
    $this->database = $database;
    }
 
    public function var($var )
    {
        return $this->database->query("SELECT * FROM table WHERE var = $var");
    }
 
}
 
//eerst $database maken
$db = new Database(....);
 
//session class
$session = new Session();
$session->var( $db , 'blaat' );
?>

<?
....
//eerst $database maken
$db = new Database(....);

//session class
$session = new Session($db);
$session->var( 'blaat' );
?>

<?
....
//eerst $database maken
$db = new Database(....);
 
//session class
$session = new Session($db);
$session->var( 'blaat' );
?>