How to use Thread in PHP on Windows - php

Question

I want to use thread in PHP . I am using windows . What needs to be done to do this . Here is the code i am running .
<?php
class AsyncOperation extends Thread {
public function __construct($arg){
$this->arg = $arg;
}
public function run(){
if($this->arg){
printf("Hello %s\n", $this->arg);
}
}
}
$thread = new AsyncOperation("World");
if($thread->start())
$thread->join();
?>
When i run the code it shows
Fatal error: Class 'Thread' not found in D:\xampp\htdocs\my.php on line 2
Thanks in advance

Answer 1

It seems like the pthreads extension is not installed on your system.
It's a custom PHP extension not by default installed with XAMPP.
Go fetch it.
You find pthread releases for Windows over at http://windows.php.net/downloads/pecl/releases/pthreads/
Add pthreadVC2.dll to the same directory as php.exe, e.g. C:\xampp\php
Add php_pthreads.dll to PHP extention folder, eg. C:\xampp\php\ext
Then modify php.ini by adding extension=php_pthreads.dll in the extensions section.
The code you posted is a basic example, which should work right out of the box, when the extension is installed.
And a goodie on top:
Video by Joe Watkins explaining "Parallel PHP"