Threaded
PHP Manual

Threaded::synchronized

Synchronization

Description

public mixed Threaded::synchronized(Closure $block, mixed ...$args)

Executes the block while retaining the referenced objects synchronization lock for the calling context

Parameters

block

The block of code to execute

args

Variable length list of arguments to use as function arguments to the block

Return Values

The return value from the block

Examples

Example #1 Synchronizing

<?php
class My extends Thread {
    public function run() {
        $this->synchronized(function($thread){
            if (!$thread->done)
                $thread->wait();
        }, $this);
    }
}
$my = new My();
$my->start();
$my->synchronized(function($thread){
    $thread->done = true;
    $thread->notify();
}, $my);
var_dump($my->join());
?>

The above example will output:

bool(true)