WordPress 获取优酷视频缩略图（新版）

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"logo":"http:\/\/g1.ykimg.com\/",
"seed":3970,
"tags":["\u6211\u53ebMT\u63d2\u66f2","\u675c\u96ef\u5a9e","\u6211\u53ebMT"],
"categories":"100",
"videoid":"55121664",
"vidEncoded":"XMjIwNDg2NjU2",
"username":"\u9b3c\u0416\u6ce3",
"userid":"3805457",
"title":"\u675c\u96ef\u5a9e - \u96ea \u6211\u53ebMT\u63d2\u66f2",
"up":0,
"down":0,
"ts":"8wWV1TDoSldjfN4B56Qwxg",
"tsup":"8wWYHjPoSldjfN4CLKkwxg",
"key1":"b148f43d",
"key2":"789e55f11a15672c",
"tt":"0",
"videoSource":"1",
"seconds":"226.35",
"streamfileids":{"flv":"36*45*36*36*36*42*36*38*36*36*59*34*56*35*59*42*63*56*59*10*56*10*36*36*45*18*38*38*38*38*9*7*59*67*66*34*9*59*65*36*63*45*19*65*59*45*59*19*65*59*42*59*63*65*38*59*67*19*36*59*67*66*9*63*19*45*","mp4":"36*45*36*36*36*7*36*38*36*36*59*34*56*35*59*59*42*66*59*10*56*10*36*36*45*18*38*38*38*38*9*7*59*67*66*34*9*59*65*36*63*45*19*65*59*45*59*19*65*59*42*59*63*65*38*59*67*19*36*59*67*66*9*63*19*45*"},
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"user":{"id":"792955424","acc_support":true},
"controller":{"search_count":true,"mp4_restrict":1,"stream_mode":1,"video_capture":true,"hd3_enabled":false,"area_code":450900,"dma_code":4134,"continuous":0,"playmode":"normal","circle":false,"tsflag":false,"other_disable":false,"xplayer_disable":false,"app_disable":false,"share_disabled":false,"download_disabled":false,"pc_disabled":false,"pad_disabled":false,"mobile_disabled":false,"tv_disabled":false,"comment_disabled":false}}

{"id":"XMjIwNDg2NjU2",
"title":"\u675c\u96ef\u5a9e - \u96ea \u6211\u53ebMT\u63d2\u66f2",
"link":"http:\/\/v.youku.com\/v_show\/id_XMjIwNDg2NjU2.html",
"thumbnail":"http:\/\/r1.ykimg.com\/054204085264610F6A0A3F40A0CC261A",
"bigThumbnail":"http:\/\/r1.ykimg.com\/054104085264610F6A0A3F40A0CC261A",
"duration":"226.35", 
"category":"\u52a8\u6f2b",
"state":"normal",
"created":"2010-11-06 19:53:54",
"published":"2010-11-06 19:58:21",
"description":"\u675c\u96ef\u5a9e - \u96ea \u6211\u53ebMT\u63d2\u66f2",
"player":"http:\/\/player.youku.com\/player.php\/sid\/XMjIwNDg2NjU2\/partnerid\/490ad1e99b548935\/v.swf",
"public_type":"all",
"copyright_type":"original",
"user":{"id":"3805457","name":"\u9b3c\u0416\u6ce3","link":"http:\/\/v.youku.com\/user_show\/id_UMTUyMjE4Mjg=html"},"tags":"\u6211\u53ebMT\u63d2\u66f2,\u675c\u96ef\u5a9e,\u6211\u53ebMT","view_count":64838,"favorite_count":"230","comment_count":"55","up_count":"896","down_count":"17","operation_limit":[],"streamtypes":["flvhd","flv","hd","3gp","3gphd"],"source":{"id":"1","name":"\u4f18\u9177\u7ad9\u5185WEB\u4e0a\u4f20","link":"http:\/\/www.youku.com\/v_up\/"}}

"thumbnail":"http:\/\/r1.ykimg.com\/054204085264610F6A0A3F40A0CC261A",
"bigThumbnail":"http:\/\/r1.ykimg.com\/054104085264610F6A0A3F40A0CC261A",

/**
 * WordPress 获取优酷缩略图
 * 作者：倡萌@WordPress大学
 * 出处：https://www.wpdaxue.com/wordPress-get-youku-video-thumb.html
 */
// 该函数用于获取优酷api地址的内容，在下一个函数中要使用
function getSslPage($url) {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
    curl_setopt($ch, CURLOPT_HEADER, false);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_REFERER, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
    $result = curl_exec($ch);
    curl_close($ch);
    return $result;
}
//该函数获取优酷视频缩略图
function get_youku_video_thumb(){
    global $post;
    //检查该文章是否已经存储过优酷缩略图地址
    if(get_post_meta($post->ID, '_youku_thumb', true )){
        //已存储，就直接调用
        $video_thumb = get_post_meta($post->ID, '_youku_thumb', true );
        //如果没有存储，我们就需要通过优酷API获取
    }else{
        //开发者的client_id，每个ID都有调用次数限制，所以这里可以申请多个使用
        //下面一行的2个 client_id 是无效的，请自己申请后，填入
        $client_ids = array('d78e1f9c33332e3','490ad1e933338935');
        //从所填入的 client_id 中随机选取一个
        $num = array_rand($client_ids,1);
        $client_id = $client_ids[$num];
        //在文章内容中比对获取优酷视频ID（在文章中单独一行添加视频播放页面的网址即可插入视频的）
        preg_match("#https?://v.youku.com/v_show/id_(?<video_id>[a-z0-9_=-]+)#i", $post->post_content, $matches);
        $cnt = count($matches);
        if ($cnt>0){
            //获取到视频ID后，通过API读取缩略图
            $link = "https://openapi.youku.com/v2/videos/show.json?video_id={$matches['video_id']}&client_id={$client_id}";
            $cexecute= getSslPage($link);
            if ($cexecute) {
                //转换内容以供php读取
                $result = json_decode($cexecute,true);
                $json = $result['data'][0];
                //调用大缩略图 bigThumbnail 
                $video_thumb = $result['bigThumbnail'];
                if($video_thumb !=''){
                    //将调用都的缩略图地址存储到文章字段中，以供后面调用，不需反复调用API
                    update_post_meta( $post->ID, '_youku_thumb', $video_thumb );
                }
            }
        }else{
            //文章没有插入优酷视频的话，使用一个默认图片地址
            $video_thumb = 'http://默认图片的网址，请自己填写';
        }
    }
    return $video_thumb;
}

<?php echo get_youku_video_thumb(); ?>