求高手这段json怎样用php解析

如题，我想解析网易云音乐歌单内容，但是php不熟这段json又太复杂实在是没有解析出来...

地址：http://music.163.com/api/playlist/detail?id=92664101

我想输出nickname和avatarUrl，循环输出歌单里歌的mp3Url，name还有artist里面的picUrl

<?php
$url = 'http://music.163.com/api/playlist/detail?id=92664101';
$json = file_get_contents($url);
$obj = json_decode($json);

if (! is_object($obj) || $obj->code != 200) {
    exit('fetch data fail');
}
$result = $obj->result;
?>
<html>
<head lang="zh-hans">
<meta charset="UTF-8">
<title>netease JSON parse</title>
<meta name="viewport"
    content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
<link href="http://libs.baidu.com/bootstrap/3.0.3/css/bootstrap.min.css"
    rel="stylesheet">
<link href="http://www.bootcss.com/p/flat-ui/css/flat-ui.css"
    rel="stylesheet">
<link rel="shortcut icon" href="http://a.tbcdn.cn/s/kissy/favicon.ico"
    type="image/x-icon">
</head>
<body>
    <div class="container">
        <h1 class="page-header"><?php echo $result->creator->nickname;?><small>avatarUrl:<?php echo $result->creator->avatarUrl;?></small>
        </h1>

        <div class="row">
  <?php if(count($result->tracks)){?>
  <table class="table table-striped">
                <thead>
                    <tr>
                        <th>#</th>
                        <th>歌曲标题</th>
                        <th>时长</th>
                        <th>歌手</th>
                        <th>mp3Url</th>
                        <th>picUrl</th>
                    </tr>
                </thead>
                <tbody>
      <?php foreach($result->tracks as $key=>$row){?>
          <tr>
                        <th><?php echo $key;?></th>
                        <th><?php echo $row->name;?></th>
                        <th><?php echo $row->duration/1000;?>s</th>
                        <th><?php echo $row->artists[0]->name;?></th>
                        <th><a href="<?php echo $row->mp3Url;?>" target="_blank">播放链接</a></th>
                        <th><a href="<?php echo $row->album->picUrl;?>" target="_blank">picUrl</a></th>
                    </tr>
      <?php }?>
      </tbody>
            </table>
  <?php }?>
  </div>
    </div>
</body>
</html>

php 解析 json 使用 json_decode() 函数即可

http://www.php.net/manual/zh/function.json-decode.php

$json = json_decode(file_get_contens(http://music.163.com/api/playlist/detail?id=92664101),true);
echo $json['result']['creator']['nickname'];//fafatears
echo $json['result']['creator']['avatarUrl'];//http://p4.music.126.net/8H54LZSIvkMK8tqCJZnbTw==/3294136843838189.jpg
$mp3 = [];
$pic = [];
foreach($json['result']['tracks'] as $value){
    $mp3[] = $value['mp3Url'];
    foreach($value['artists'] as $v) {
        $pic[] = $v['picUrl'];
    }
}
var_dump($mp3);var_dump($pic);

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