[英]how to do a foreach loop values in a multidimensional array PHP
我正在使用 Spotify API，我只想为 ['tracks'][0]["album"]["images"][2]['url'] 中的值做一个 foreach 循环
我怎么能go一下这个？
我尝试做一个 foreach 循环来检索多维关联数组内关联的每个键的值，遍历每个元素，但仍然可以让它工作。
Array
(
[tracks] => Array
(
[0] => Array
(
[album] => Array
(
[album_type] => album
[artists] => Array
(
[0] => Array
(
[external_urls] => Array
(
[spotify] => https://open.spotify.com/artist/4ovtyvs7j1jSmwhkBGHqSr
)
[href] => https://api.spotify.com/v1/artists/4ovtyvs7j1jSmwhkBGHqSr
[id] => 4ovtyvs7j1jSmwhkBGHqSr
[name] => Olamide
[type] => artist
[uri] => spotify:artist:4ovtyvs7j1jSmwhkBGHqSr
)
)
[external_urls] => Array
(
[spotify] => https://open.spotify.com/album/6fG2eFCgUmytQWL6umtsCh
)
[href] => https://api.spotify.com/v1/albums/6fG2eFCgUmytQWL6umtsCh
[id] => 6fG2eFCgUmytQWL6umtsCh
[images] => Array
(
[0] => Array
(
[height] => 640
[url] => https://i.scdn.co/image/ab67616d0000b27387d20b9a27d5e14d74b5cb77
[width] => 640
)
[1] => Array
(
[height] => 300
[url] => https://i.scdn.co/image/ab67616d00001e0287d20b9a27d5e14d74b5cb77
[width] => 300
)
[2] => Array
(
[height] => 64
[url] => https://i.scdn.co/image/ab67616d0000485187d20b9a27d5e14d74b5cb77
[width] => 64
)
)
[name] => Carpe Diem
[release_date] => 2020-10-07
[release_date_precision] => day
[total_tracks] => 12
[type] => album
[uri] => spotify:album:6fG2eFCgUmytQWL6umtsCh
)
[artists] => Array
(
[0] => Array
(
[external_urls] => Array
(
[spotify] => https://open.spotify.com/artist/4ovtyvs7j1jSmwhkBGHqSr
)
[href] => https://api.spotify.com/v1/artists/4ovtyvs7j1jSmwhkBGHqSr
[id] => 4ovtyvs7j1jSmwhkBGHqSr
[name] => Olamide
[type] => artist
[uri] => spotify:artist:4ovtyvs7j1jSmwhkBGHqSr
)
[1] => Array
(
[external_urls] => Array
(
[spotify] => https://open.spotify.com/artist/5yOvAmpIR7hVxiS6Ls5DPO
)
[href] => https://api.spotify.com/v1/artists/5yOvAmpIR7hVxiS6Ls5DPO
[id] => 5yOvAmpIR7hVxiS6Ls5DPO
[name] => Omah Lay
[type] => artist
[uri] => spotify:artist:5yOvAmpIR7hVxiS6Ls5DPO
)
)
[disc_number] => 1
[duration_ms] => 171764
[explicit] => 1
[external_ids] => Array
(
[isrc] => USUYG1330802
)
[external_urls] => Array
(
[spotify] => https://open.spotify.com/track/5DS9LiyEdw2zY8bM6kjjgM
)
[href] => https://api.spotify.com/v1/tracks/5DS9LiyEdw2zY8bM6kjjgM
[id] => 5DS9LiyEdw2zY8bM6kjjgM
[is_local] =>
[is_playable] => 1
[name] => Infinity (feat. Omah Lay)
[popularity] => 73
[preview_url] => https://p.scdn.co/mp3-preview/5159fa17676fc96e32db13b7680f7497d5c2f74d?cid=756f211306ad4c9a934d07c5722790b5
[track_number] => 3
[type] => track
[uri] => spotify:track:5DS9LiyEdw2zY8bM6kjjgM
)
[1] => Array
(
[album] => Array
(
[album_type] => album
[artists] => Array
(
[0] => Array
(
[external_urls] => Array
(
[spotify] => https://open.spotify.com/artist/4ovtyvs7j1jSmwhkBGHqSr
)
[href] => https://api.spotify.com/v1/artists/4ovtyvs7j1jSmwhkBGHqSr
[id] => 4ovtyvs7j1jSmwhkBGHqSr
[name] => Olamide
[type] => artist
[uri] => spotify:artist:4ovtyvs7j1jSmwhkBGHqSr
)
)
[external_urls] => Array
(
[spotify] => https://open.spotify.com/album/6fG2eFCgUmytQWL6umtsCh
)
[href] => https://api.spotify.com/v1/albums/6fG2eFCgUmytQWL6umtsCh
[id] => 6fG2eFCgUmytQWL6umtsCh
[images] => Array
(
[0] => Array
(
[height] => 640
[url] => https://i.scdn.co/image/ab67616d0000b27387d20b9a27d5e14d74b5cb77
[width] => 640
)
[1] => Array
(
[height] => 300
[url] => https://i.scdn.co/image/ab67616d00001e0287d20b9a27d5e14d74b5cb77
[width] => 300
)
[2] => Array
(
[height] => 64
[url] => https://i.scdn.co/image/ab67616d0000485187d20b9a27d5e14d74b5cb77
[width] => 64
)
)
[name] => Carpe Diem
[release_date] => 2020-10-07
[release_date_precision] => day
[total_tracks] => 12
[type] => album
[uri] => spotify:album:6fG2eFCgUmytQWL6umtsCh
)
[artists] => Array
(
[0] => Array
(
[external_urls] => Array
(
[spotify] => https://open.spotify.com/artist/4ovtyvs7j1jSmwhkBGHqSr
)
[href] => https://api.spotify.com/v1/artists/4ovtyvs7j1jSmwhkBGHqSr
[id] => 4ovtyvs7j1jSmwhkBGHqSr
[name] => Olamide
[type] => artist
[uri] => spotify:artist:4ovtyvs7j1jSmwhkBGHqSr
)
[1] => Array
(
[external_urls] => Array
(
[spotify] => https://open.spotify.com/artist/68R39izwNAztATrXMOqkJS
)
[href] => https://api.spotify.com/v1/artists/68R39izwNAztATrXMOqkJS
[id] => 68R39izwNAztATrXMOqkJS
[name] => Bad Boy Timz
[type] => artist
[uri] => spotify:artist:68R39izwNAztATrXMOqkJS
)
)
[disc_number] => 1
[duration_ms] => 194000
[explicit] => 1
[external_ids] => Array
(
[isrc] => USUYG1330809
)
[external_urls] => Array
(
[spotify] => https://open.spotify.com/track/558ULLj8yY2vT8XGtgY0q9
)
[href] => https://api.spotify.com/v1/tracks/558ULLj8yY2vT8XGtgY0q9
[id] => 558ULLj8yY2vT8XGtgY0q9
[is_local] =>
[is_playable] => 1
[name] => Loading (feat. Bad Boy Timz)
[popularity] => 64
[preview_url] => https://p.scdn.co/mp3-preview/7848a9f9ea879e6b1c6618508354e2559678aa8c?cid=756f211306ad4c9a934d07c5722790b5
[track_number] => 10
[type] => track
[uri] => spotify:track:558ULLj8yY2vT8XGtgY0q9
)
我会这样处理：
$api = array (
'tracks' =>
array (
0 =>
array (
'album' =>
array (
'album_type' => 'album',
'artists' =>
array (
0 =>
array (
'external_urls' =>
array (
'spotify' => 'https://open.spotify.com/artist/4ovtyvs7j1jSmwhkBGHqSr',
),
'href' => 'https://api.spotify.com/v1/artists/4ovtyvs7j1jSmwhkBGHqSr',
'id' => '4ovtyvs7j1jSmwhkBGHqSr',
'name' => 'Olamide',
'type' => 'artist',
'uri' => 'spotify:artist:4ovtyvs7j1jSmwhkBGHqSr',
),
),
'external_urls' =>
array (
'spotify' => 'https://open.spotify.com/album/6fG2eFCgUmytQWL6umtsCh',
),
'href' => 'https://api.spotify.com/v1/albums/6fG2eFCgUmytQWL6umtsCh',
'id' => '6fG2eFCgUmytQWL6umtsCh',
'images' =>
array (
0 =>
array (
'height' => '640',
'url' => 'https://i.scdn.co/image/ab67616d0000b27387d20b9a27d5e14d74b5cb77',
'width' => '640',
),
1 =>
array (
'height' => '300',
'url' => 'https://i.scdn.co/image/ab67616d00001e0287d20b9a27d5e14d74b5cb77',
'width' => '300',
),
2 =>
array (
'height' => '64',
'url' => 'https://i.scdn.co/image/ab67616d0000485187d20b9a27d5e14d74b5cb77',
'width' => '64',
),
),
'name' => 'Carpe Diem',
'release_date' => '2020-10-07',
'release_date_precision' => 'day',
'total_tracks' => '12',
'type' => 'album',
'uri' => 'spotify:album:6fG2eFCgUmytQWL6umtsCh',
),
'artists' =>
array (
0 =>
array (
'external_urls' =>
array (
'spotify' => 'https://open.spotify.com/artist/4ovtyvs7j1jSmwhkBGHqSr',
),
'href' => 'https://api.spotify.com/v1/artists/4ovtyvs7j1jSmwhkBGHqSr',
'id' => '4ovtyvs7j1jSmwhkBGHqSr',
'name' => 'Olamide',
'type' => 'artist',
'uri' => 'spotify:artist:4ovtyvs7j1jSmwhkBGHqSr',
),
1 =>
array (
'external_urls' =>
array (
'spotify' => 'https://open.spotify.com/artist/5yOvAmpIR7hVxiS6Ls5DPO',
),
'href' => 'https://api.spotify.com/v1/artists/5yOvAmpIR7hVxiS6Ls5DPO',
'id' => '5yOvAmpIR7hVxiS6Ls5DPO',
'name' => 'Omah Lay',
'type' => 'artist',
'uri' => 'spotify:artist:5yOvAmpIR7hVxiS6Ls5DPO',
),
),
'disc_number' => '1',
'duration_ms' => '171764',
'explicit' => '1',
'external_ids' =>
array (
'isrc' => 'USUYG1330802',
),
'external_urls' =>
array (
'spotify' => 'https://open.spotify.com/track/5DS9LiyEdw2zY8bM6kjjgM',
),
'href' => 'https://api.spotify.com/v1/tracks/5DS9LiyEdw2zY8bM6kjjgM',
'id' => '5DS9LiyEdw2zY8bM6kjjgM
[is_local] => ',
'is_playable' => '1',
'name' => 'Infinity (feat. Omah Lay)',
'popularity' => '73',
'preview_url' => 'https://p.scdn.co/mp3-preview/5159fa17676fc96e32db13b7680f7497d5c2f74d?cid=756f211306ad4c9a934d07c5722790b5',
'track_number' => '3',
'type' => 'track',
'uri' => 'spotify:track:5DS9LiyEdw2zY8bM6kjjgM',
),
1 =>
array (
'album' =>
array (
'album_type' => 'album',
'artists' =>
array (
0 =>
array (
'external_urls' =>
array (
'spotify' => 'https://open.spotify.com/artist/4ovtyvs7j1jSmwhkBGHqSr',
),
'href' => 'https://api.spotify.com/v1/artists/4ovtyvs7j1jSmwhkBGHqSr',
'id' => '4ovtyvs7j1jSmwhkBGHqSr',
'name' => 'Olamide',
'type' => 'artist',
'uri' => 'spotify:artist:4ovtyvs7j1jSmwhkBGHqSr',
),
),
'external_urls' =>
array (
'spotify' => 'https://open.spotify.com/album/6fG2eFCgUmytQWL6umtsCh',
),
'href' => 'https://api.spotify.com/v1/albums/6fG2eFCgUmytQWL6umtsCh',
'id' => '6fG2eFCgUmytQWL6umtsCh',
'images' =>
array (
0 =>
array (
'height' => '640',
'url' => 'https://i.scdn.co/image/ab67616d0000b27387d20b9a27d5e14d74b5cb77',
'width' => '640',
),
1 =>
array (
'height' => '300',
'url' => 'https://i.scdn.co/image/ab67616d00001e0287d20b9a27d5e14d74b5cb77',
'width' => '300',
),
2 =>
array (
'height' => '64',
'url' => 'https://i.scdn.co/image/ab67616d0000485187d20b9a27d5e14d74b5cb77',
'width' => '64',
),
),
'name' => 'Carpe Diem',
'release_date' => '2020-10-07',
'release_date_precision' => 'day',
'total_tracks' => '12',
'type' => 'album',
'uri' => 'spotify:album:6fG2eFCgUmytQWL6umtsCh',
),
'artists' =>
array (
0 =>
array (
'external_urls' =>
array (
'spotify' => 'https://open.spotify.com/artist/4ovtyvs7j1jSmwhkBGHqSr',
),
'href' => 'https://api.spotify.com/v1/artists/4ovtyvs7j1jSmwhkBGHqSr',
'id' => '4ovtyvs7j1jSmwhkBGHqSr',
'name' => 'Olamide',
'type' => 'artist',
'uri' => 'spotify:artist:4ovtyvs7j1jSmwhkBGHqSr',
),
1 =>
array (
'external_urls' =>
array (
'spotify' => 'https://open.spotify.com/artist/68R39izwNAztATrXMOqkJS',
),
'href' => 'https://api.spotify.com/v1/artists/68R39izwNAztATrXMOqkJS',
'id' => '68R39izwNAztATrXMOqkJS',
'name' => 'Bad Boy Timz',
'type' => 'artist',
'uri' => 'spotify:artist:68R39izwNAztATrXMOqkJS',
),
),
'disc_number' => '1',
'duration_ms' => '194000',
'explicit' => '1',
'external_ids' =>
array (
'isrc' => 'USUYG1330809',
),
'external_urls' =>
array (
'spotify' => 'https://open.spotify.com/track/558ULLj8yY2vT8XGtgY0q9',
),
'href' => 'https://api.spotify.com/v1/tracks/558ULLj8yY2vT8XGtgY0q9',
'id' => '558ULLj8yY2vT8XGtgY0q9
[is_local] => ',
'is_playable' => '1',
'name' => 'Loading (feat. Bad Boy Timz)',
'popularity' => '64',
'preview_url' => 'https://p.scdn.co/mp3-preview/7848a9f9ea879e6b1c6618508354e2559678aa8c?cid=756f211306ad4c9a934d07c5722790b5',
'track_number' => '10',
'type' => 'track',
'uri' => 'spotify:track:558ULLj8yY2vT8XGtgY0q9',
),
),
);
$tracks = [];
foreach ($api['tracks'] as $track) {
$_track = [
'artists' => '',
'name' => '',
'album' => '',
'image' => ''
];
$artists = [];
foreach ($track['artists'] as $artist) {
$artists[] = $artist['name'];
}
$_track['artists'] = implode(', ', $artists);
$_track['name'] = $track['name'];
$_track['album'] = $track['album']['name'];
$_track['image'] = $track['album']['images'][2]['url'];
$tracks[] = $_track;
}
var_dump($tracks);
结果是：
array(2) {
[0]=>
array(4) {
["artists"]=>
string(17) "Olamide, Omah Lay"
["name"]=>
string(25) "Infinity (feat. Omah Lay)"
["album"]=>
string(10) "Carpe Diem"
["image"]=>
string(64) "https://i.scdn.co/image/ab67616d0000485187d20b9a27d5e14d74b5cb77"
}
[1]=>
array(4) {
["artists"]=>
string(21) "Olamide, Bad Boy Timz"
["name"]=>
string(28) "Loading (feat. Bad Boy Timz)"
["album"]=>
string(10) "Carpe Diem"
["image"]=>
string(64) "https://i.scdn.co/image/ab67616d0000485187d20b9a27d5e14d74b5cb77"
}
}
这可以通过array_walk_recursive方便地完成。 无论您的url键/值在什么深度或 position，它都会被找到并迭代。 如下：
$urls = []; // For collecting URLs, passed in by reference:
array_walk_recursive($data, function($val, $key) use (&$urls) {
if($key === 'url') { // if $key is "url", add to $urls; ignore the rest.
$urls[] = $val;
}
});
请注意，如果您在不同深度/位置有多个url键，它们将全部添加进来。如果您需要针对可能存在多个相同键的特定深度/位置，解决方案会稍微复杂一些。 在您的用例中，这不是问题，所以我保持简单。
另请注意， array_walk_recursive回调 function仅在“叶子”或数组的最终值上调用。 因此，不会在arrays 包含 arrays 的成员上调用它。 非最终数组成员将简单地继续前进，直到找到“叶子”。
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