Getting value from sub class to main class

Hello!
I created two class : main and Task
I have called Task in main class and I used this in my main class and Task class :

PHP:

public function onNothing() {
                $this->called++;
                if($this->called == 1) {
                    $task = new Task($this, $player);
                    $this->task[] = $task;
                    $h = $this->getServer()->getScheduler()->scheduleRepeatingTask($task, 20);
                    $task->setHandler($h);
                    $this->task[$task->getTaskId()] = $task->getTaskId();


Task class (sub class)

PHP:

public function __construct(main $plugin , Player $player) {
          $this->plugin = $plugin;
          $this->player = $player;
          $this->seconds = 0;
          parent::__construct($plugin);
      }


So I want to get $seconds to my main class
As you can see I already use __construct so if I use __construct again in my main class,the server can't not find constructor
I also tried $this->plugin->seconds
but how do you define $this->plugin is?
Anyone can help QAQ

 

What do you mean &?

 

It's called passing by reference. You'll be accessing the live array instead of a copied array.

 

Sorry but I am not good at english
Can you do me an example of "&" please?

 

Sure

 

uhmm i have read that webside and I don't understand it well....
Also, i only see access variable between one class...