# Pool::shutdown

(PECL pthreads >= 2.0.0)

Pool::shutdown — Shutdown all workers

### Description

public Pool::shutdown ( ) : void

Shuts down all of the workers in the pool. This will block until all submitted tasks have been executed.

### Parameters

This function has no parameters.

### Return Values

No value is returned.

### Examples

Example #1 Shutting down a pool

`<?php
class Task extends Threaded
{
public function run()
{
usleep(500000);
}
}
$pool = new Pool(4);
for ($i = 0; $i < 10; ++$i) {
$pool->submit(new Task());
}
$pool->shutdown(); // blocks until all submitted tasks have finished executing`