I'm writing a script which will accept multiple socket connections in background and do some job received by gearman (in this case forget about gearman)

class ListenerThread extends Thread
{

    public function run(){

        $host = '192.168.30.119';
        $port = 5010;

        $socket = socket_create(AF_INET, SOCK_STREAM, 0);
        socket_bind($socket, $host, $port);

        socket_listen($socket);

        $client = array($socket);

        global $clientsArr;

        do{

             socket_select($client, $write = NULL, $except = NULL, $tv_sec = NULL);
             if(in_array($socket, $client)){

                 $tmp = socket_accept($socket);

                 socket_write($tmp, "who are you\n");

                 $request = trim(socket_read($tmp, 2024));
                 echo "new client connected\n";
                 $clientsArr[] = $tmp;

                 $client[] = $tmp;

             }

        } while(true);

    }

}

global $clientsArr;
$clientsArr = new Threaded();

$listener = new ListenerThread();
$listener->start(PTHREADS_INHERIT_ALL | PTHREADS_ALLOW_GLOBALS);


for($i = 0; $i < 100; $i++){
    print_r($clientsArr);
    sleep(2);
}

and now when I run this code and connect client with telnet 192.168.30.119 5010 I am getting strange output

OUTPUT

new client connected
Threaded Object
(
   [0] => Resource id #4
)
Threaded Object
(
   [0] => Resource id #5
)
Threaded Object
(
   [0] => Resource id #6
)

Why is thread or something else changing resource even there is no more than one connection?

Please note that this is first time I'm using threads so if someone has a better solution please share.

The goal is to have a background loop which will listen on port and store connections in array or object which should be accessible outside of class.