我有一个音乐共享脚本，我正在尝试从我的mysql数据库创建JSON，我正在尝试创建一个特定的结构，似乎无法弄明白
继承我的代码
<?php
//Create Database connection
$db = mysql_connect("localhost","UN","PW");
if (!$db) {
die('Could not connect to db: ' . mysql_error());
}
//Select the Database
mysql_select_db("DB",$db);
{ // <--WHY
$result = mysql_query("SELECT * FROM users ORDER BY username ASC");
$json_response = array(); //Create an array
while ($row = mysql_fetch_array($result))
{
$row_array = array();
$row_array['idu'] = $row['idu'];
$row_array['username'] = $row['username'];
$row_array['first_name'] = $row['first_name'];
$row_array['last_name'] = $row['last_name'];
$row_array['country'] = $row['country'];
$row_array['image'] = $row['image'];
$row_array['cover'] = $row['cover'];
$row_array['description'] = $row['description'];
$row_array['playlists'] = array();
$row_array['tracks'] = array();
$plid = $row['idu'];
$option_qry = mysql_query("SELECT * FROM playlists where playlists.by=$plid");
while ($opt_fet = mysql_fetch_array($option_qry))
{
$row_array['playlists'][] = array(
'id' => $opt_fet['id'],
'name' => $opt_fet['name'],
'by' => $opt_fet['by'],
);
}
array_push($json_response, $row_array); //push the values in the array
//tracks
$option_qry = mysql_query("SELECT * FROM tracks where tracks.uid=$plid");
while ($opt_fet = mysql_fetch_array($option_qry))
{
$row_array['tracks'][] = array(
'id' => $opt_fet['id'],
'title' => $opt_fet['title'],
'name' => $opt_fet['name'],
'art' => $opt_fet['art'],
'likes' => $opt_fet['likes'],
'downloads' => $opt_fet['downloads'],
'plays' => $opt_fet['views'],
'uid' => $opt_fet['uid'],
);
}
array_push($json_response, $row_array); //push the values in the array
}
echo json_encode($json_response,JSON_PRETTY_PRINT);
} // <-- WHY
?>
用户表：
id username last_name first_name country etc...
1 username1 Mynce George USA etc...
2 username2 Jenkins Fred USA etc...
3 username3 Walberg Mark USA etc...
4 username4 Smith Will USA etc...
播放列表表：
id by name
1 4 My playlists
2 3 Popular Songs
播放列表条目表：
id playlists track
12 1 13
13 1 23
14 1 3
15 1 17
16 1 9
12 2 14
13 2 24
14 2 4
15 2 18
16 2 10
跟踪表：
id title name art likes downloads views
1 song_title song1.mp3 art1.png 13 8 55
2 song_title song2.mp3 art2.png 12 10 31
3 song_title song3.mp3 art3.png 7 32 50
4 song_title song4.mp3 art4.png 22 11 1
5 song_title song5.mp3 art5.png 1 28 2
使用我当前的代码，我得到了这个JSON结果：
{
"idu": "2",
"username": "chicagochurch",
"first_name": "Chicago Christian Center",
"last_name": "",
"country": "United States",
"image": "839674815_146358938_1746691162.png",
"cover": "173157219_1187606488_302826016.jpg",
"description": "This is the official Chicago Church Music page.",
"playlists": [
{
"id": "4",
"name": "We Give You Praise",
"by": "2"
}
],
"tracks": []
},
{
"idu": "2",
"username": "chicagochurch",
"first_name": "Chicago Christian Center",
"last_name": "",
"country": "United States",
"image": "839674815_146358938_1746691162.png",
"cover": "173157219_1187606488_302826016.jpg",
"description": "This is the official Chicago Church Music page.",
"playlists": [
{
"id": "4",
"name": "We Give You Praise",
"by": "2"
}
],
"tracks": [
{
"id": "29",
"title": "01 We Give You Praise",
"name": "1667450919_35711384_1898671201.mp3",
"art": "97020012_1272964020_1490042512.png",
"likes": "1",
"downloads": "1",
"plays": "5",
"uid": "2"
},
{
"id": "30",
"title": "02 Luvudees",
"name": "1361859314_884859216_209326964.mp3",
"art": "1591964284_1156840179_1721104535.png",
"likes": "1",
"downloads": "1",
"plays": "5",
"uid": "2"
},
{
"id": "31",
"title": "03 Mugo Del",
"name": "1366849477_130736941_1367659635.mp3",
"art": "1181156184_556035815_1698596436.png",
"likes": "0",
"downloads": "1",
"plays": "0",
"uid": "2"
},
{
"id": "32",
"title": "04 San Amensa",
"name": "40925819_971317614_1732715256.mp3",
"art": "837149755_251638008_1945445596.png",
"likes": "0",
"downloads": "0",
"plays": "1",
"uid": "2"
},
{
"id": "33",
"title": "05 One True God",
"name": "1201163785_1107025307_1077346045.mp3",
"art": "713651840_1636034922_1247445482.png",
"likes": "0",
"downloads": "0",
"plays": "0",
"uid": "2"
},
{
"id": "34",
"title": "06 Mugo Anav",
"name": "173569477_686122962_117960391.mp3",
"art": "1432749408_578109445_1094716795.png",
"likes": "0",
"downloads": "0",
"plays": "0",
"uid": "2"
},
{
"id": "35",
"title": "07 Hallelujah",
"name": "133051077_70993845_552471086.mp3",
"art": "2040610215_1811023913_383444282.png",
"likes": "0",
"downloads": "0",
"plays": "0",
"uid": "2"
},
{
"id": "36",
"title": "08 Sheppard",
"name": "984429058_1532916377_1375134853.mp3",
"art": "1153269141_143559426_997684622.png",
"likes": "0",
"downloads": "0",
"plays": "0",
"uid": "2"
},
{
"id": "37",
"title": "09 I Love you Lord",
"name": "794115968_1411878888_673035094.mp3",
"art": "1692460167_1433248811_682631716.png",
"likes": "0",
"downloads": "0",
"plays": "0",
"uid": "2"
},
{
"id": "38",
"title": "10 Jesus In The Center",
"name": "202390322_461558278_1271927584.mp3",
"art": "1048499380_362527600_4599069.png",
"likes": "0",
"downloads": "1",
"plays": "0",
"uid": "2"
},
{
"id": "39",
"title": "11 Mugo Luvudeemos",
"name": "274506373_302381815_356651583.mp3",
"art": "1229728795_739090349_686501748.png",
"likes": "0",
"downloads": "1",
"plays": "0",
"uid": "2"
},
{
"id": "40",
"title": "12 Onday Chedo Kud",
"name": "378498031_1470949688_1199351944.mp3",
"art": "308978665_1074723934_419931699.png",
"likes": "0",
"downloads": "0",
"plays": "0",
"uid": "2"
},
{
"id": "41",
"title": "13 The Word",
"name": "956461611_287666310_43661088.mp3",
"art": "1584112229_240532531_977129308.png",
"likes": "1",
"downloads": "4",
"plays": "0",
"uid": "2"
}
]
}
下面的JSON是我想要获得的结构，我希望用户创建的每个播放列表将与该播放列表关联的曲目嵌套在该播放列表下的嵌套数组中用户＆gt;播放列表＆gt;曲目 < / p>
我在这里输入了两个播放列表“我们给你赞美”和“我们给你赞美2”例如
{
"idu": "2",
"username": "chicagochurch",
"first_name": "Chicago Christian Center",
"last_name": "",
"country": "United States",
"image": "839674815_146358938_1746691162.png",
"cover": "173157219_1187606488_302826016.jpg",
"description": "This is the official Chicago Church Music page.",
"playlists": [
{
"id": "4",
"name": "We Give You Praise",
"by": "2",
"tracks": [
{
"id": "29",
"title": "01 We Give You Praise",
"name": "1667450919_35711384_1898671201.mp3",
"art": "97020012_1272964020_1490042512.png",
"likes": "1",
"downloads": "1",
"plays": "4",
"uid": "2"
},
{
"id": "30",
"title": "02 Luvudees",
"name": "1361859314_884859216_209326964.mp3",
"art": "1591964284_1156840179_1721104535.png",
"likes": "0",
"downloads": "1",
"plays": "3",
"uid": "2"
},
{
"id": "31",
"title": "03 Mugo Del",
"name": "1366849477_130736941_1367659635.mp3",
"art": "1181156184_556035815_1698596436.png",
"likes": "0",
"downloads": "1",
"plays": "0",
"uid": "2"
},
{
"id": "32",
"title": "04 San Amensa",
"name": "40925819_971317614_1732715256.mp3",
"art": "837149755_251638008_1945445596.png",
"likes": "0",
"downloads": "0",
"plays": "1",
"uid": "2"
},
{
"id": "33",
"title": "05 One True God",
"name": "1201163785_1107025307_1077346045.mp3",
"art": "713651840_1636034922_1247445482.png",
"likes": "0",
"downloads": "0",
"plays": "0",
"uid": "2"
},
{
"id": "34",
"title": "06 Mugo Anav",
"name": "173569477_686122962_117960391.mp3",
"art": "1432749408_578109445_1094716795.png",
"likes": "0",
"downloads": "0",
"plays": "0",
"uid": "2"
},
{
"id": "35",
"title": "07 Hallelujah",
"name": "133051077_70993845_552471086.mp3",
"art": "2040610215_1811023913_383444282.png",
"likes": "0",
"downloads": "0",
"plays": "0",
"uid": "2"
},
{
"id": "36",
"title": "08 Sheppard",
"name": "984429058_1532916377_1375134853.mp3",
"art": "1153269141_143559426_997684622.png",
"likes": "0",
"downloads": "0",
"plays": "0",
"uid": "2"
},
{
"id": "37",
"title": "09 I Love you Lord",
"name": "794115968_1411878888_673035094.mp3",
"art": "1692460167_1433248811_682631716.png",
"likes": "0",
"downloads": "0",
"plays": "0",
"uid": "2"
},
{
"id": "38",
"title": "10 Jesus In The Center",
"name": "202390322_461558278_1271927584.mp3",
"art": "1048499380_362527600_4599069.png",
"likes": "0",
"downloads": "1",
"plays": "0",
"uid": "2"
},
{
"id": "39",
"title": "11 Mugo Luvudeemos",
"name": "274506373_302381815_356651583.mp3",
"art": "1229728795_739090349_686501748.png",
"likes": "0",
"downloads": "1",
"plays": "0",
"uid": "2"
},
{
"id": "40",
"title": "12 Onday Chedo Kud",
"name": "378498031_1470949688_1199351944.mp3",
"art": "308978665_1074723934_419931699.png",
"likes": "0",
"downloads": "0",
"plays": "0",
"uid": "2"
},
{
"id": "41",
"title": "13 The Word",
"name": "956461611_287666310_43661088.mp3",
"art": "1584112229_240532531_977129308.png",
"likes": "1",
"downloads": "4",
"plays": "0",
"uid": "2"
}
]
},
{
"id": "5",
"name": "We Give You Praise 2",
"by": "2",
"tracks": [
{
"id": "29",
"title": "01 We Give You Praise 2",
"name": "1667450919_35711384_1898671201.mp3",
"art": "97020012_1272964020_1490042512.png",
"likes": "1",
"downloads": "1",
"plays": "4",
"uid": "2"
},
{
"id": "30",
"title": "02 Luvudees 2",
"name": "1361859314_884859216_209326964.mp3",
"art": "1591964284_1156840179_1721104535.png",
"likes": "0",
"downloads": "1",
"plays": "3",
"uid": "2"
},
{
"id": "31",
"title": "03 Mugo Del 2",
"name": "1366849477_130736941_1367659635.mp3",
"art": "1181156184_556035815_1698596436.png",
"likes": "0",
"downloads": "1",
"plays": "0",
"uid": "2"
},
{
"id": "32",
"title": "04 San Amensa 2",
"name": "40925819_971317614_1732715256.mp3",
"art": "837149755_251638008_1945445596.png",
"likes": "0",
"downloads": "0",
"plays": "1",
"uid": "2"
},
{
"id": "33",
"title": "05 One True God",
"name": "1201163785_1107025307_1077346045.mp3",
"art": "713651840_1636034922_1247445482.png",
"likes": "0",
"downloads": "0",
"plays": "0",
"uid": "2"
},
{
"id": "34",
"title": "06 Mugo Anav 2",
"name": "173569477_686122962_117960391.mp3",
"art": "1432749408_578109445_1094716795.png",
"likes": "0",
"downloads": "0",
"plays": "0",
"uid": "2"
},
{
"id": "35",
"title": "07 Hallelujah 2",
"name": "133051077_70993845_552471086.mp3",
"art": "2040610215_1811023913_383444282.png",
"likes": "0",
"downloads": "0",
"plays": "0",
"uid": "2"
},
{
"id": "36",
"title": "08 Sheppard 2",
"name": "984429058_1532916377_1375134853.mp3",
"art": "1153269141_143559426_997684622.png",
"likes": "0",
"downloads": "0",
"plays": "0",
"uid": "2"
},
{
"id": "37",
"title": "09 I Love you Lord 2",
"name": "794115968_1411878888_673035094.mp3",
"art": "1692460167_1433248811_682631716.png",
"likes": "0",
"downloads": "0",
"plays": "0",
"uid": "2"
},
{
"id": "38",
"title": "10 Jesus In The Center 2",
"name": "202390322_461558278_1271927584.mp3",
"art": "1048499380_362527600_4599069.png",
"likes": "0",
"downloads": "1",
"plays": "0",
"uid": "2"
},
{
"id": "39",
"title": "11 Mugo Luvudeemos 2",
"name": "274506373_302381815_356651583.mp3",
"art": "1229728795_739090349_686501748.png",
"likes": "0",
"downloads": "1",
"plays": "0",
"uid": "2"
},
{
"id": "40",
"title": "12 Onday Chedo Kud 2",
"name": "378498031_1470949688_1199351944.mp3",
"art": "308978665_1074723934_419931699.png",
"likes": "0",
"downloads": "0",
"plays": "0",
"uid": "2"
},
{
"id": "41",
"title": "13 The Word 2",
"name": "956461611_287666310_43661088.mp3",
"art": "1584112229_240532531_977129308.png",
"likes": "1",
"downloads": "4",
"plays": "0",
"uid": "2"
}
]
}
]
}
正如你在上面的结构中看到的那样，播放列表列出了与它相关的轨道在它自己的嵌套数组中，我确定playlistentries表需要用于此但我不知道如何实现它，对不起所有代码...但感谢您的帮助！