parallel.php

<?php

sleep(4);
$count = 100;

for ($x = 0; $x < $count; $x++) {
    $runtimes[$x] = new \parallel\Runtime;
}

foreach ($runtimes as $runtime) {
    $futures[] = $runtime->run(function () use ($count) {
        echo --$count, PHP_EOL;
        usleep(100000);
    })->done();
}

$buff = $count;

for ($x = 0; $x < $buff; $x++) {
    echo --$count, PHP_EOL;
    usleep(100000);
}