Set and get sessions - php

Question

I am trying to set a php session from my loginpage:
if($results){
$session->setId($results['Id']);
}
In my session class I have these:
class Session{
public function createSession(){
session_start();
error_reporting(E_ALL);
}
public function getId(){
return $_SESSION['Id'];
}
public function setId($value){
$_SESSION['Id'] = $value;
}
}
Then I try to call it to the index my Id
$thisSession=Session::getId();
if(isset($thisSession)) {
echo "The session is set.";
} else{
echo "Sorry, it's not set.";
}
How can I do it?
Undefined index: Id
To pass the session id from login to my index page!

Answer 1

You can for sure create an object that encapsulate the $_SESSION but be careful about how PHP works.
I suggest small modifications to your class (if it's ok to you) using the session_id method :
class Session
{
public function __construct()
{
if (!isset($_SESSION)) {
$this->initSession();
}
}
protected function initSession()
{
session_start();
error_reporting(E_ALL);
$this->setSessionId();
}
public function setSessionId()
{
$_SESSION['Id'] = session_id();
}
public function getSessionId()
{
return $_SESSION['Id'];
}
}
Keep in mind that $_SESSION variables are accessible by users easily don't put in it too much informations, especially sensitive.
$_SESSION is a PHP superglobal variable you can retrieve it wherever your want to, but you can get it by declare :
$session = new Session();
$id = $session->getSessionId();
var_dump($id);
For logout you should add this method :
public function deleteSession()
{
session_destroy();
}
And then use when disconnected action is asked
$session = new Session();
$session->deleteSession();