Question

I’m relatively new to the PHP OO concept. I’ve been messing around with the following,

<?php

require('class_database.php');
require('class_session.php');

class something {  

  $database = NULL;
  $session = NULL;

  function __construct() {
    $this->database = new database();
    $this->session = new session();
  }

  function login() {
    $this->session->doLogin();
  }
}
?>

in another script

$something = new something();
$something->login();

In this example, $database has a constructor which creates a protected variable containing a MySQLi connection. It also has a function called query().

If $session needed to run $database->query, how can I go about it? Creating a new database class would be highly wasteful but I can’t seem to access $database from $session.

Have I created a big hassle for myself I should have avoided? I’m wanting session to provide login verification which would need to access the database to check credentials.

Thanks for any help

Answer 1

How about making the constructor of the session class take a parameter that is the instance of database?

$database = new database();
$session = new session($database);

Then in the session constructor, set it to a property of the object and make use of it:

private var $_database;

public function __construct($database) {
   $this->_database = $database;
}

public function doSomething() {
    $this->_database->query();
}