PHP: Run class method in separate thread

Question

Is it possible to run a method of a class in a separate thread in PHP?
for example:
Thread:

class AsyncThread extends \Thread {

    private $method;
    private $obj;
    private $params;
    private $timeout;

    public function __construct($obj, $method, $params, $timeout){
        $this->obj    = $obj;
        $this->method = $method;
        $this->params = $params;
        $this->timeout = $timeout;
    }

    public function run() {
        sleep($this->timeout);
        if (call_user_func_array([$this->obj, $this->method], $this->params)) {
            return true;
        } else return false;
    }
}  

Class:

class MyClass {

    private $param = 'username';

    public function callThread() {
        $thread = new AsyncThread($this, 'threadMethod', ['hello'], 5);
    }

    public function threadMethod($param) {
        echo "{$param} {$this->param}";
    }

}

When I try to call a method callThread, error:

$obj = new MyClass();
$obj->callThread();

Serialization of 'Closure' is not allowed

Or what else there are ways to start a thread, so that the flow had access to the methods of the object class MyClass?

Answer 1

I think what you are looking for is pthreads, from PHP DOC:

pthreads is an Object Orientated API that allows user-land multi-threading in PHP. It includes all the tools you need to create multi-threaded applications targeted at the Web or the Console. PHP applications can create, read, write, execute and synchronize with Threads, Workers and Threaded objects.

A Threaded Object: A Threaded Object forms the basis of the functionality that allows pthreads to operate. It exposes synchronization methods and some useful interfaces for the programmer.

And here it is on GitHub - PHTREADS