Session.php

<?php

declare(strict_types=1);

namespace XoopsModules\Publisher;

/*
 You may not change or alter any portion of this comment or credits
 of supporting developers from this source code or any supporting source code
 which is considered copyrighted (c) material of the original comment or credit authors.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 */
/**
 *  Publisher class
 *
 * @copyright       The XUUPS Project http://sourceforge.net/projects/xuups/
 * @license         http://www.fsf.org/copyleft/gpl.html GNU public license
 * @since           1.0
 * @author          trabis <lusopoemas@gmail.com>
 * @author          Harry Fuecks (PHP Anthology Volume II)
 */

require_once \dirname(__DIR__) . '/include/common.php';

/**
 * Class Session
 */
class Session
{
    /**
     * Session constructor<br>
     * Starts the session with session_start()
     * <strong>Note:</strong> that if the session has already started,
     * session_start() does nothing
     */
    protected function __construct()
    {
        if (!@\session_start()) {
            throw new \RuntimeException('Session could not start.');
        }
    }

    /**
     * Sets a session variable
     *
     * @param string $name  name of variable
     * @param mixed  $value value of variable
     */
    public function set($name, $value)
    {
        $_SESSION[$name] = $value;
    }

    /**
     * Fetches a session variable
     *
     * @param string $name name of variable
     *
     * @return mixed value of session variable
     */
    public function get($name)
    {
        return $_SESSION[$name] ?? false;
    }

    /**
     * Deletes a session variable
     *
     * @param string $name name of variable
     */
    public function del($name)
    {
        unset($_SESSION[$name]);
    }

    /**
     * Destroys the whole session
     */
    public function destroy()
    {
        $_SESSION = [];
        \session_destroy();
    }

    /**
     * @return Session
     */
    public static function getInstance()
    {
        static $instance;
        if (null === $instance) {
            $instance = new static();
        }

        return $instance;
    }
}