Sample code pthreads 3.20 in php 7.2

pthreads.php

<?php

class KikiThreaded extends Thread
{
    private $id;

    public function __construct($id)
    {
        $this->id = $id;
    }

    //This is where all of your work will be done.
    public function run()
    {
        for ($i = 0; $i < 10; $i++) {
            echo sprintf('..hi thread %s..', $this->id);
            if ($this->id === 0) {
                echo PHP_EOL;
            }
            sleep(rand(2, 10));
        }
    }
}

$allThreads = [];
for ($i = 0; $i < 5; $i++) {
    $newThread = new KikiThreaded($i);
    $newThread->start();
    $allThreads[] = $newThread;
}
array_map(function ($thread) {
    $thread->join();
}, $allThreads);