pcntl-daemon.php

#!/usr/bin/env php
<?php

declare(strict_types=1);
declare(ticks=1);

use Common\Helper\Logger;

if (PHP_SAPI !== 'cli') {
    exit();
}

require dirname(__DIR__) . '/vendor/autoload.php';
Config::init(Config::CONTEXT_DAEMON);

$pid = pcntl_fork();
if ($pid === -1) {
    Logger::log()->error('Could not fork.');
    exit(1);
}

if ($pid) {
    pcntl_wait($status); // PROTECT AGAINST ZOMBIE CHILDREN
}

$signalHandler = static function (int $signal): void {
    Logger::log()->info(sprintf('Received signal %d', $signal));
    switch ($signal) {
        case SIGTERM;
        case SIGHUP;
            exit(0);
            break;
    }
};

pcntl_signal(SIGTERM, $signalHandler);
pcntl_signal(SIGHUP, $signalHandler);

// MAIN LOOP
while (true) {
    sleep(2);
    //DO STUFF
}