Setting Sessions inside PHP Class - php

Question

I'm creating a user class to handle my logins. As I wish to set the sessions inside the class after the username and password are validated, do I have to use session_start() at the top of the class, inside the public function where the sessions are to be set, or where the instance is created? Perhaps it could go inside function _construct()?
This is how I would like to call the class:
<php
include('user_class.php');
$user = new user;
$user->login($username,$password);
?>

Answer 1

You can just add session_start(); at the top of the file you're including the class in.
So
<?php
session_start();
include('user_class.php');
$user = new user;
$user->login($username,$password);
?>
would work.

Answer 2

Next to your user-class create yourself a session-class as well.
The user-class then is just storing itself into the session class and does not need to take care about calling session_start or not, that's the job of the session-class.
<php
include('session_class.php');
include('user_class.php');
$session = new session;
if ($session->hasRegisteredUser()) {
$user = $session->getRegisteredUser();
} else {
$user = new user;
    $user->login($username, $password);
$session->setRegisteredUser($user);
}
Does this answer your question or do you need now to know how to do it with the session class?

Answer 3

Yes you can use sessions inside your classes because sessions are global variables in php.
Code Example(adding a new session variable):
<?php
class sessionControle{
...
...
public function addSession($index, $value){
$_SESSION[$index] = $value;
return $_SESSION[$index];
}
}
?>
in your main php file you can include the function $_SESSIONS are global
Code in your main file:
<?php
session_start();
include_once("myClass.php");
$Se = new sessionControle;
echo $Se->addSession('User', 'Crx');
//Double check here !!
echo $_SESSION['User'];
?>
Output: Crx