dynamic - php - Dynamically update Singleton class' value -

this followup question this question

if declare singleton class:

// server.php class server {   private $stopper;   private static $instance;    public static getinstance() {      if(!isset(self::$server))        self::$server = new static();     return self::$server;    }    public function setstopper() { $this->stopper = true; }    public function startserver() {      $self = $this;     $consumer = new consumer();     $consumer->onconsume(function($data) use($self, $consumer) {       // processing       if($self->getstopper()) { // false          $consumer->stop();          $self->stopserver();       }     });     $consumer->consume();   }    public function stopserver() { ... }  } 

and used following script start server:

// start.php $server = server::getinstance(); $server->startserver(); 

and following script set stopper:

// stop.php $server = server::getinstance(); $server->setstopper(); 

it doesn't work: stopper still false (tried echoing)! have tried using sessions instead.

// start.php $server = new server();  session_start(); $_session['server'] = $server; session_write_close();  $server->startserver();  // stop.php session_start(); $server = $_session['server']; $server->setstopper(true); 

but running stop.php throws following error: undefined index: server

thanks @maximus2012 , @sammitch.

i got idea following thread google groups

https://groups.google.com/d/msg/phirehose-users/dvcz9evcna8/noiv3m2byaej

i used external .txt file store flag , set stopper instead of fiasco ;)

update

i found out why not possible work singletons in case. every time php invoked, separate process (or thread, depending on server) created handle request i.e. separate process(or threads) start.php , stop.php , can't access same singleton due "inter process privacy"!

but if run start.php , stop.php single process works, expected!