从 YouTube API JSON 响应 (PHP) 中选择一个随机视频

Question

假设我使用 YouTube API v3 进行了一个简单的 youtube 搜索，我得到如下响应：

{
 "kind": "youtube#searchListResponse",
 "etag": "\"m2yskBQFythfE4irbTIeOgYYfBU/1MwZbx-vX21eNjUJjkUlNHKCIhI\"",
 "nextPageToken": "CAIQAA",
 "regionCode": "US",
 "pageInfo": {
  "totalResults": 412,
  "resultsPerPage": 2
 },
 "items": [
  {
   "kind": "youtube#searchResult",
   "etag": "\"m2yskBQFythfE4irbTIeOgYYfBU/q2KHbIuwnAhM64HgrqhBqc5xvTI\"",
   "id": {
    "kind": "youtube#video",
    "videoId": "gpZvuZEiINA"
   },
   "snippet": {
    "publishedAt": "2014-03-30T11:46:50.000Z",
    "channelId": "UCCaE0Bj6NI-y8_yL1FpcJUw",
    "title": "Depression-90` instrumental (download link)",
    "description": "E-Mail: ensari5500@gmail.com\nNew old school instrumental with download link ,Enjoy the beat, I hope you like it!\nPlease comment, rate and subscribe if you like this beat\nI appreciate YOUR support! Peace and respect",
    "thumbnails": {
     "default": {
      "url": "https://i.ytimg.com/vi/gpZvuZEiINA/default.jpg",
      "width": 120,
      "height": 90
     },
     "medium": {
      "url": "https://i.ytimg.com/vi/gpZvuZEiINA/mqdefault.jpg",
      "width": 320,
      "height": 180
     },
     "high": {
      "url": "https://i.ytimg.com/vi/gpZvuZEiINA/hqdefault.jpg",
      "width": 480,
      "height": 360
     }
    },
    "channelTitle": "Ekii020 90` OLDSCHOOL - BOOMBOOMBAP INSTRUMENTALS",
    "liveBroadcastContent": "none"
   }
  },
  {
   "kind": "youtube#searchResult",
   "etag": "\"m2yskBQFythfE4irbTIeOgYYfBU/HXRyGhFaD4Cn0wvF5XPMJKX5tNQ\"",
   "id": {
    "kind": "youtube#video",
    "videoId": "G7ThqpcuPTI"
   },
   "snippet": {
    "publishedAt": "2017-08-05T23:30:24.000Z",
    "channelId": "UCsFmkkSVNgvihycqqtjSXgA",
    "title": "Homeless (Dark Sad Piano Hip Hop Rap Instrumental Beat)",
    "description": "http://rightbeatradio.com/product/homeless/\n\nI wrote a song about a humble man I met yesterday. We spoke for a while. He just wanted to talk. He was homeless.\n\nI cut some pieces from a few jazz recordings and put them behind a simple piano riff.\n\nThis music has a lot of feeling. Perfectly describes how I felt after our conversation.\n\nTake care.\n\n89 bpm\n\nrightbeatradio.com\ntwitter.com/rightbeatradio",
    "thumbnails": {
     "default": {
      "url": "https://i.ytimg.com/vi/G7ThqpcuPTI/default.jpg",
      "width": 120,
      "height": 90
     },
     "medium": {
      "url": "https://i.ytimg.com/vi/G7ThqpcuPTI/mqdefault.jpg",
      "width": 320,
      "height": 180
     },
     "high": {
      "url": "https://i.ytimg.com/vi/G7ThqpcuPTI/hqdefault.jpg",
      "width": 480,
      "height": 360
     }
    },
    "channelTitle": "Right Beat Radio",
    "liveBroadcastContent": "none"
   }
  }
 ]
}

例如，我想生成 10 个结果，但随后只能从响应中随机选择 1（一个）[item]。如何随机化结果，并从整个响应中只选择其中一个？

我见过shuffle() 和array_rand() 等函数，但这些似乎不是我需要的函数。

我也见过这样的sn-p：

$array = json_decode($JSON, true);
$random_entry = array_rand($array['items'], 1);
$json_data = json_encode($random_entry);

我试过了，但它只返回“nextPageToken”或“kind”等字符串。

我想选择一个整个 [item] 并获取其所有相关的 [snippet] 数据，例如 channelId、标题、描述、缩略图等。

谁能指出我正确的方向？

Answer 1

试试这个

$array = json_decode($JSON, true);
$items = $array['items'];
$random_key = array_rand($items, 1);
$json_data = json_encode($items[$random_key]);

array_rand() 返回数组键，而不是数组值。