我正试图从itunes api中获取专辑艺术作品，我需要获取某首歌曲的艺术作品，因此我使用此代码从api中检索json，将其转换为数组，然后循环通过。
<?php
$songs = file_get_contents('https://itunes.apple.com/search?term=Little+Mix&attribute=artistTerm&entity=song&limit=300');
$songs = json_decode($songs, true);
foreach ($songs as $v1) {
foreach ($v1 as $v2) {
foreach ($v2 as $v3) {
echo "$v3'n";
}
}
};
?>
阵列的一个精简示例是：
Array
(
[resultCount] => 58
[results] => Array
(
[0] => Array
(
[wrapperType] => track
[kind] => song
[artistId] => 477515548
[collectionId] => 571831060
[trackId] => 571831159
[artistName] => Little Mix
[collectionName] => Wings - Single
[trackName] => Wings
[collectionCensoredName] => Wings - Single
[trackCensoredName] => Wings
[artistViewUrl] => https://itunes.apple.com/us/artist/little-mix/id477515548?uo=4
[collectionViewUrl] => https://itunes.apple.com/us/album/wings/id571831060?i=571831159&uo=4
[trackViewUrl] => https://itunes.apple.com/us/album/wings/id571831060?i=571831159&uo=4
[previewUrl] => http://a32.phobos.apple.com/us/r1000/116/Music/v4/08/61/a7/0861a7aa-b4ab-c157-b45d-420ba769e061/mzaf_6115583363349830746.aac.m4a
[artworkUrl30] => http://a4.mzstatic.com/us/r30/Music/v4/a7/4b/b1/a74bb1aa-af39-a128-3c81-2aaf94817537/886443701472.30x30-50.jpg
[artworkUrl60] => http://a1.mzstatic.com/us/r30/Music/v4/a7/4b/b1/a74bb1aa-af39-a128-3c81-2aaf94817537/886443701472.60x60-50.jpg
[artworkUrl100] => http://a2.mzstatic.com/us/r30/Music/v4/a7/4b/b1/a74bb1aa-af39-a128-3c81-2aaf94817537/886443701472.100x100-75.jpg
[collectionPrice] => 1.29
[trackPrice] => 1.29
[releaseDate] => 2012-10-12T07:00:00Z
[collectionExplicitness] => notExplicit
[trackExplicitness] => notExplicit
[discCount] => 1
[discNumber] => 1
[trackCount] => 1
[trackNumber] => 1
[trackTimeMillis] => 220093
[country] => USA
[currency] => USD
[primaryGenreName] => Pop
[radioStationUrl] => https://itunes.apple.com/us/station/idra.571831159
)
[1] => Array
(
[wrapperType] => track
[kind] => song
[artistId] => 477515548
[collectionId] => 734694154
[trackId] => 734694188
[artistName] => Little Mix
[collectionName] => Salute (The Deluxe Edition)
[trackName] => Move
[collectionCensoredName] => Salute (The Deluxe Edition)
[trackCensoredName] => Move
[artistViewUrl] => https://itunes.apple.com/us/artist/little-mix/id477515548?uo=4
[collectionViewUrl] => https://itunes.apple.com/us/album/move/id734694154?i=734694188&uo=4
[trackViewUrl] => https://itunes.apple.com/us/album/move/id734694154?i=734694188&uo=4
[previewUrl] => http://a1503.phobos.apple.com/us/r1000/011/Music4/v4/d2/88/3b/d2883b20-9e93-4b76-f8d4-fd0c0f64f4d9/mzaf_2393781884939600271.plus.aac.p.m4a
[artworkUrl30] => http://a1.mzstatic.com/us/r30/Music6/v4/3d/42/b1/3d42b145-82a9-0bdb-d5d3-e035d532ec21/886444313476.30x30-50.jpg
[artworkUrl60] => http://a5.mzstatic.com/us/r30/Music6/v4/3d/42/b1/3d42b145-82a9-0bdb-d5d3-e035d532ec21/886444313476.60x60-50.jpg
[artworkUrl100] => http://a3.mzstatic.com/us/r30/Music6/v4/3d/42/b1/3d42b145-82a9-0bdb-d5d3-e035d532ec21/886444313476.100x100-75.jpg
[trackPrice] => 1.29
[releaseDate] => 2013-11-05T08:00:00Z
[collectionExplicitness] => notExplicit
[trackExplicitness] => notExplicit
[discCount] => 1
[discNumber] => 1
[trackCount] => 16
[trackNumber] => 2
[trackTimeMillis] => 224333
[country] => USA
[currency] => USD
[primaryGenreName] => Pop
[radioStationUrl] => https://itunes.apple.com/us/station/idra.734694188
)
我需要做的是用trackName Move循环查找数组，然后从中获取专辑插图。我已经设法循环浏览了一遍，但我看不出如何只从我想要的歌曲中获得专辑艺术作品。
谢谢，Marcus
您只需要一个循环：
foreach ($songs['results'] as $key => $song) {
if($song['trackName'] == 'Move'){
echo sprintf('<img src="%s" />', $song['artworkUrl30'])."'n";
}
}
工作演示
<?php
$data = json_decode(file_get_contents('https://itunes.apple.com/search?term=Little+Mix&attribute=artistTerm&entity=song&limit=300', true));
foreach ($data['results'] as $song) {
if($song['trackName'] == 'Move'){
echo '<img src="' . $song['artworkUrl100'] . '" />';
}
};
?>
关于：
foreach ($songs['result'] as $song) {
echo $song['trackName']; // or if ($song['trackName'] something) {}
echo $song['artworkUrl30']; // this is the url you want
}