<?php

use function Icicle\Loop\run;
use function Icicle\Loop\periodic;
use function Icicle\Loop\stop;

$i = 1;
$mt = microtime(true);

periodic(
    0.1, // seconds
    function () use (&$i, $mt) {
        if (3 === $i) {
            stop();
        }
        echo microtime(true) - $mt. PHP_EOL;
        $i++;
    }
);

run();

0.10332012176514
0.20341110229492
0.30351901054382

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PHP 7.4, Zend 3.0, Symfony 4.3, Laravel 5.8, PHPUnit 8.0, Doctrine 2.10