Omschrijving

function getVideoImage($url) {
    $thumbnail_uri = '';

    // Get background image for YouTube or Vimeo video
    if (strpos($url, 'youtube') !== false) {
        parse_str( parse_url( $url, PHP_URL_QUERY ), $my_array_of_vars );
        $id =  $my_array_of_vars['v'];
        $thumbnail_uri = 'https://img.youtube.com/vi/' . $id . '/hqdefault.jpg';
    }

    if (strpos($url, 'youtu.be') !== false) {
        $id =  substr($url, strrpos($url, '/') + 1);
        $thumbnail_uri = 'https://img.youtube.com/vi/' . $id . '/hqdefault.jpg';
    }

    if (strpos($url, 'vimeo') !== false) {
        $data = json_decode(file_get_contents('https://vimeo.com/api/oembed.json?url=' . $url));

        if(!$data) return false;

        $thumbnail = $data->thumbnail_url;

        // Remove thumbnail size, add jpg extension
        $thumbnail_uri = strstr($thumbnail, '_', true) . '.jpg';
    }

    return $thumbnail_uri;
}

Snippet