Денис Дерепко

$classes = explode(' ', $filtervariants['year']['class']);

if (!empty($_POST['year'])) { 
    $classes[] = 'active';
}

$filtervariants['year']['class'] = implode(' ', $classes);

$params = ['1', '2'];

$script = shell_exec('php socket/incomingMessage.php '.implode(' ', $params));

$currentDate = new DateTimeImmutable();

$startCurrentDate = $currentDate->setTime(0, 0);
$nextDay          = $startCurrentDate->add(new \DateInterval('P1D'));

$matches = [];

$result = preg_match('/\w+.\w+$/','info@gmail.com', $matches);

var_dump($result);
var_dump($matches);

$packageId = (int) $key["PackageId"];

if ($packageId === 1 || $packageId === 2) {
} else if ($packageId === 3 || $packageId === 4 ) {
}

$goodList = [1, 2, 3];
$badList = [4, 5, 6];

if (in_array($key["PackageId"], $goodList)) {

} else if (in_array($key["PackageId"], $badList)) {

}