How does the concept of "Share Nothing" in PHP threading impact the communication and sharing of objects between threads?

The concept of "Share Nothing" in PHP threading means that each thread has its own isolated memory space, and objects cannot be shared between threads. To communicate between threads, you can use message passing or synchronization techniques like mutexes or semaphores. 

// Example of using message passing to communicate between threads
$worker1 = new Worker();
$worker2 = new Worker();

$worker1->start();
$worker2->start();

$worker1->sendMessage("Hello from Worker 1!");
$worker2->sendMessage("Hello from Worker 2!");

$worker1->join();
$worker2->join();

class Worker extends Thread {
    public function run() {
        while ($message = $this->receiveMessage()) {
            echo "Thread #" . $this->getThreadId() . " received message: " . $message . PHP_EOL;
        }
    }

    public function sendMessage($message) {
        $this->synchronized(function($thread) use ($message) {
            $thread->message = $message;
            $thread->notify();
        }, $this);
    }

    public function receiveMessage() {
        $this->synchronized(function($thread) {
            $thread->wait();
            return $thread->message;
        }, $this);
    }
}

Keywords

PHP threading Share Nothing communication objects

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