PHP Manual: Identification

public static Thread Thread::getCurrentThread()

Return a reference to the currently executing Thread

This function has no parameters.

An object representing the currently executing Thread

Example #1 Return the currently executing Thread

<?php
class My extends Thread {
    public function run() {
        var_dump(Thread::getCurrentThread());
    }
}
$my = new My();
$my->start();
?>

The above example will output:

object(My)#2 (0) {
}