Simple PHP Session Class ($_SESSION)
##Usage
include "session.class.php";
$instance = Session::getInstance();
$instance->hello = "Hello Word";
##Functions
$instance = Session::getInstance();
$instance->startSession();
if(isset($instance->hello)) echo $instance->hello;
unset($instance->hello);
if(isset($instance->hello)) echo $instance->hello; else echo 'unset var hello';
$instance->destroy();
$instance->restart();
$instance->reset();
##Credits
Based on the example of linblow@hotmail.fr in http://php.net/manual/en/function.session-start.php#102460
Copyright (c) 2016, fespinozadeveloper