使用PHP从html代码获取Youtube视频ID

function getYouTubeVideoId($html) {
    $pattern = '/youtube\.com\/embed\/([a-zA-Z0-9_-]+)/';
    preg_match($pattern, $html, $matches);
    if (count($matches) > 1) {
        return $matches[1];
    }
    return false;
}

$html =<iframe width="560" height="315" src="https://www.youtube.com/embed/abcdefgh" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>';
$videoId = getYouTubeVideoId($html);
if ($videoId) {
    echo "Video ID: " . $videoId;
} else {
    echo "Video ID not found";
}

Video ID: abcdefgh