An example of parallel which is a parallel concurrency extension for PHP

parallel-runtime.php

<?php

/** @see https://www.php.net/manual/en/intro.parallel.php */
$runtime = new \parallel\Runtime();
$channel = new \parallel\Channel();

// Run a task in parallel, passing a channel for communication
$future = $runtime->run(function () use ($channel) {
    // Do some work here
    $channel->send('Result');
}, $channel);

// Get the result from the channel
$result = $channel->recv();