编码相对较新。我目前遇到了从多维数组中解析值的问题
这是数组：
Array
(
[0] => Array
(
[title] => Wildfire
[artist] => Rachel Platten
[genre] => electropop
[media] => Array
(
[0] => Array
(
[totalDiscs] => 1
[position] => 1
[tracks] => Array
(
[0] => Array
(
[title] => Stand by You
[number] => 1
[artists] => Array
(
[0] => Rachel Platten
)
)
[1] => Array
(
[title] => Astronauts
[number] => 10
[artists] => Array
(
[0] => Rachel Platten
)
)
[2] => Array
(
[title] => Congratulations
[number] => 11
[artists] => Array
(
[0] => Rachel Platten
)
)
[3] => Array
(
[title] => Superman
[number] => 12
[artists] => Array
(
[0] => Rachel Platten
)
)
[4] => Array
(
[title] => Lonely Planet
[number] => 13
[artists] => Array
(
[0] => Rachel Platten
)
)
[5] => Array
(
[title] => Stand by You (acoustic)
[number] => 14
[artists] => Array
(
[0] => Rachel Platten
)
)
[6] => Array
(
[title] => Speechless (acoustic)
[number] => 15
[artists] => Array
(
[0] => Rachel Platten
)
)
[7] => Array
(
[title] => Hey Hey Hallelujah
[number] => 2
[artists] => Array
(
[0] => Rachel Platten feat. Andy Grammer
)
)
[8] => Array
(
[title] => Speechless
[number] => 3
[artists] => Array
(
[0] => Rachel Platten
)
)
[9] => Array
(
[title] => Beating Me Up
[number] => 4
[artists] => Array
(
[0] => Rachel Platten
)
)
[10] => Array
(
[title] => Fight Song
[number] => 5
[artists] => Array
(
[0] => Rachel Platten
)
)
[11] => Array
(
[title] => Better Place
[number] => 6
[artists] => Array
(
[0] => Rachel Platten
)
)
[12] => Array
(
[title] => Lone Ranger
[number] => 7
[artists] => Array
(
[0] => Rachel Platten
)
)
[13] => Array
(
[title] => You Don’t Know My Heart
[number] => 8
[artists] => Array
(
[0] => Rachel Platten
)
)
[14] => Array
(
[title] => Angels in Chelsea
[number] => 9
[artists] => Array
(
[0] => Rachel Platten
)
)
)
)
)
[types] => Array
(
[0] => Album
[1] => Official
)
[score] => 1
)
)
这是我的代码：
$json = json_decode($result, true);
echo 'Title: ' . $json['title'] . '<br />';
echo 'Artist: ' . $json['artist'] . '<br />';
echo 'Genre: ' . $json['genre'] . '<br />';
然而，每次调试时都会出现一个通知：
E_NOTICE：类型8 - 未定义索引：标题 - 第34行标题：
E_NOTICE：类型8 - 未定义索引：艺术家 - 第35行艺术家：
E_NOTICE：类型8 - 未定义索引：流派 - 在第36行描述：
我的代码有什么问题？以及如何解决它？
答案 0 :(得分：0)
你正在使用三维数组运行..你将通过写这样的方式得到答案，......
echo 'Title: ' . $json['media']['tracks']['title'] . '<br />';
在数组中传递名字时请注意一点。