$youtube = new \skeeks\youtubeHelper\YoutubeHelper('https://www.youtube.com/watch?v=xr1kXiEtCmo');
$youtube = new \skeeks\youtubeHelper\YoutubeHelper('https://youtu.be/xr1kXiEtCmo');
$youtube = new \skeeks\youtubeHelper\YoutubeHelper('<iframe width="640" height="360" src="https://www.youtube.com/embed/xr1kXiEtCmo?rel=0&amp;controls=0&amp;showinfo=0" frameborder="0" allowfullscreen></iframe>');
if ($youtube->getId())
{
    print_r($youtube->getId());
    print_r($youtube->getEmbedUrl());
    print_r($youtube->getImageUrl());
    print_r($youtube->getWatchUrl());
} else
{
    print_r('Parsing code error');
}

$youtube = new \skeeks\youtubeHelper\YoutubeHelper('https://www.youtube.com/watch?v=xr1kXiEtCmo');

if ($youtube->getId()
{
    echo '<iframe width="560" height="315" src="<?= $youtube->getEmbedUrl(); ?>?rel=0&amp;controls=0&amp;showinfo=0" frameborder="0" allowfullscreen></iframe>';
}