Hi everyone
I have written a piece of code like the following
I used the front of the class: http://www.php.net/manual/en/book.pthreads.php
The goal is the end result is the sum = 2003
But I get an error message.
Is it possible to modify this piece of code for me.
Thank you And sorry for my illiteracy.

PHP Code:
<?php
class my extends Thread {

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

  public function 
run(){
    if(
$this->arg){
      
$temp $this->arg;
      
$i = ($this->arg) + 1000;
      echo 
$i;
      
$j[$temp] = $i;
      echo 
'<br>';
    }
  }
}
$j = array(
    new 
my('1'), new my('2')
);

$thread $j[0];
$thread->start();
$thread->join();

$thread $j[1];
$thread->start();
$thread->join();

$sum $j[0] + $j[1];
echo 
$sum;
?>