我试图从这个复杂的嵌套 JSON 数据中获取时间“15:00:00”的最低和最高温度。谁能帮助我如何提取数据？
JSON 数据如下所示:
{
"city": {
"id": 1609350,
"name": "Bangkok",
"coord": {
"lon": 100.51667,
"lat": 13.75
},
"country": "TH",
"population": 0,
"sys": {
"population": 0
}
},
"cod": "200",
"message": 0.0169,
"cnt": 38,
"list": [{
"dt": 1466402400,
"main": {
"temp": 311.79,
"temp_min": 308.315,
"temp_max": 311.79,
"pressure": 1018.37,
"sea_level": 1018.77,
"grnd_level": 1018.37,
"humidity": 61,
"temp_kf": 3.47
},
"weather": [{
"id": 801,
"main": "Clouds",
"description": "few clouds",
"icon": "02d"
}],
"clouds": {
"all": 24
},
"wind": {
"speed": 2.14,
"deg": 269.001
},
"sys": {
"pod": "d"
},
"dt_txt": "2016-06-20 06:00:00"
}, {
"dt": 1466413200,
"main": {
"temp": 309.22,
"temp_min": 306.611,
"temp_max": 309.22,
"pressure": 1016.83,
"sea_level": 1017.28,
"grnd_level": 1016.83,
"humidity": 61,
"temp_kf": 2.6
},
"weather": [{
"id": 500,
"main": "Rain",
"description": "light rain",
"icon": "10d"
}],
"clouds": {
"all": 36
},
"wind": {
"speed": 1.07,
"deg": 132.503
},
"rain": {
"3h": 1.88
},
"sys": {
"pod": "d"
},
"dt_txt": "2016-06-20 09:00:00"
}, {
"dt": 1466424000,
"main": {
"temp": 307.17,
"temp_min": 305.429,
"temp_max": 307.17,
"pressure": 1017.62,
"sea_level": 1018.09,
"grnd_level": 1017.62,
"humidity": 59,
"temp_kf": 1.74
},
"weather": [{
"id": 804,
"main": "Clouds",
"description": "overcast clouds",
"icon": "04n"
}],
"clouds": {
"all": 92
},
"wind": {
"speed": 1.33,
"deg": 153.501
},
"rain": {},
"sys": {
"pod": "n"
},
"dt_txt": "2016-06-20 12:00:00"
}, {
"dt": 1466434800,
"main": {
"temp": 303.96,
"temp_min": 303.092,
"temp_max": 303.96,
"pressure": 1019.69,
"sea_level": 1020.02,
"grnd_level": 1019.69,
"humidity": 66,
"temp_kf": 0.87
},
"weather": [{
"id": 803,
"main": "Clouds",
"description": "broken clouds",
"icon": "04n"
}],
"clouds": {
"all": 76
},
"wind": {
"speed": 4.26,
"deg": 180.504
},
"rain": {},
"sys": {
"pod": "n"
},
"dt_txt": "2016-06-20 15:00:00"
}, {
"dt": 1466445600,
"main": {
"temp": 301.672,
"temp_min": 301.672,
"temp_max": 301.672,
"pressure": 1019.5,
"sea_level": 1019.9,
"grnd_level": 1019.5,
"humidity": 74,
"temp_kf": 0
},
"weather": [{
"id": 802,
"main": "Clouds",
"description": "scattered clouds",
"icon": "03n"
}],
"clouds": {
"all": 48
},
"wind": {
"speed": 3.06,
"deg": 163.501
},
"rain": {},
"sys": {
"pod": "n"
},
"dt_txt": "2016-06-20 18:00:00"
}, {
"dt": 1466456400,
"main": {
"temp": 300.708,
"temp_min": 300.708,
"temp_max": 300.708,
"pressure": 1018.73,
"sea_level": 1019.13,
"grnd_level": 1018.73,
"humidity": 82,
"temp_kf": 0
},
"weather": [{
"id": 803,
"main": "Clouds",
"description": "broken clouds",
"icon": "04n"
}],
"clouds": {
"all": 68
},
"wind": {
"speed": 1.66,
"deg": 141.5
},
"rain": {},
"sys": {
"pod": "n"
},
"dt_txt": "2016-06-20 21:00:00"
}, {
"dt": 1466467200,
"main": {
"temp": 301.217,
"temp_min": 301.217,
"temp_max": 301.217,
"pressure": 1020.18,
"sea_level": 1020.61,
"grnd_level": 1020.18,
"humidity": 79,
"temp_kf": 0
},
"weather": [{
"id": 803,
"main": "Clouds",
"description": "broken clouds",
"icon": "04d"
}],
"clouds": {
"all": 68
},
"wind": {
"speed": 1.61,
"deg": 91.0013
},
"rain": {},
"sys": {
"pod": "d"
},
"dt_txt": "2016-06-21 00:00:00"
}, {
"dt": 1466478000,
"main": {
"temp": 306.368,
"temp_min": 306.368,
"temp_max": 306.368,
"pressure": 1020.81,
"sea_level": 1021.3,
"grnd_level": 1020.81,
"humidity": 62,
"temp_kf": 0
},
"weather": [{
"id": 802,
"main": "Clouds",
"description": "scattered clouds",
"icon": "03d"
}],
"clouds": {
"all": 36
},
"wind": {
"speed": 2.86,
"deg": 298.001
},
"rain": {},
"sys": {
"pod": "d"
},
"dt_txt": "2016-06-21 03:00:00"
}, {
"dt": 1466488800,
"main": {
"temp": 308.988,
"temp_min": 308.988,
"temp_max": 308.988,
"pressure": 1019.11,
"sea_level": 1019.63,
"grnd_level": 1019.11,
"humidity": 49,
"temp_kf": 0
},
"weather": [{
"id": 802,
"main": "Clouds",
"description": "scattered clouds",
"icon": "03d"
}],
"clouds": {
"all": 44
},
"wind": {
"speed": 4.12,
"deg": 266.505
},
"rain": {},
"sys": {
"pod": "d"
},
"dt_txt": "2016-06-21 06:00:00"
}, {
"dt": 1466499600,
"main": {
"temp": 305.343,
"temp_min": 305.343,
"temp_max": 305.343,
"pressure": 1017.43,
"sea_level": 1017.76,
"grnd_level": 1017.43,
"humidity": 67,
"temp_kf": 0
},
"weather": [{
"id": 500,
"main": "Rain",
"description": "light rain",
"icon": "10d"
}],
"clouds": {
"all": 36
},
"wind": {
"speed": 3.87,
"deg": 212.501
},
"rain": {
"3h": 1.415
},
"sys": {
"pod": "d"
},
"dt_txt": "2016-06-21 09:00:00"
}, {
"dt": 1466510400,
"main": {
"temp": 304.423,
"temp_min": 304.423,
"temp_max": 304.423,
"pressure": 1018.4,
"sea_level": 1018.97,
"grnd_level": 1018.4,
"humidity": 63,
"temp_kf": 0
},
"weather": [{
"id": 500,
"main": "Rain",
"description": "light rain",
"icon": "10n"
}],
"clouds": {
"all": 92
},
"wind": {
"speed": 2.05,
"deg": 196.508
},
"rain": {
"3h": 1.075
},
"sys": {
"pod": "n"
},
"dt_txt": "2016-06-21 12:00:00"
}, {
"dt": 1466521200,
"main": {
"temp": 303.07,
"temp_min": 303.07,
"temp_max": 303.07,
"pressure": 1020,
"sea_level": 1020.58,
"grnd_level": 1020,
"humidity": 67,
"temp_kf": 0
},
"weather": [{
"id": 803,
"main": "Clouds",
"description": "broken clouds",
"icon": "04n"
}],
"clouds": {
"all": 68
},
"wind": {
"speed": 2.56,
"deg": 178.501
},
"rain": {},
"sys": {
"pod": "n"
},
"dt_txt": "2016-06-21 15:00:00"
}, {
"dt": 1466532000,
"main": {
"temp": 300.893,
"temp_min": 300.893,
"temp_max": 300.893,
"pressure": 1020.32,
"sea_level": 1020.72,
"grnd_level": 1020.32,
"humidity": 80,
"temp_kf": 0
},
"weather": [{
"id": 500,
"main": "Rain",
"description": "light rain",
"icon": "10n"
}],
"clouds": {
"all": 56
},
"wind": {
"speed": 1.62,
"deg": 242.5
},
"rain": {
"3h": 1.735
},
"sys": {
"pod": "n"
},
"dt_txt": "2016-06-21 18:00:00"
}, {
"dt": 1466542800,
"main": {
"temp": 300.177,
"temp_min": 300.177,
"temp_max": 300.177,
"pressure": 1019.56,
"sea_level": 1020.01,
"grnd_level": 1019.56,
"humidity": 79,
"temp_kf": 0
},
"weather": [{
"id": 803,
"main": "Clouds",
"description": "broken clouds",
"icon": "04n"
}],
"clouds": {
"all": 56
},
"wind": {
"speed": 1.11,
"deg": 237.002
},
"rain": {},
"sys": {
"pod": "n"
},
"dt_txt": "2016-06-21 21:00:00"
}, {
"dt": 1466553600,
"main": {
"temp": 301.577,
"temp_min": 301.577,
"temp_max": 301.577,
"pressure": 1020.42,
"sea_level": 1020.8,
"grnd_level": 1020.42,
"humidity": 74,
"temp_kf": 0
},
"weather": [{
"id": 802,
"main": "Clouds",
"description": "scattered clouds",
"icon": "03d"
}],
"clouds": {
"all": 48
},
"wind": {
"speed": 2.11,
"deg": 288.01
},
"rain": {},
"sys": {
"pod": "d"
},
"dt_txt": "2016-06-22 00:00:00"
}]
}
最佳答案
<?php
$data= '{
"city": {
"id": 1609350,
"name": "Bangkok",
"coord": {
"lon": 100.51667,
"lat": 13.75
},
"country": "TH",
"population": 0,
"sys": {
"population": 0
}
},
"cod": "200",
"message": 0.0169,
"cnt": 38,
"list": [
{
"dt": 1466402400,
"main": {
"temp": 311.79,
"temp_min": 308.315,
"temp_max": 311.79,
"pressure": 1018.37,
"sea_level": 1018.77,
"grnd_level": 1018.37,
"humidity": 61,
"temp_kf": 3.47
},
"weather": [
{
"id": 801,
"main": "Clouds",
"description": "few clouds",
"icon": "02d"
}
],
"clouds": {
"all": 24
},
"wind": {
"speed": 2.14,
"deg": 269.001
},
"sys": {
"pod": "d"
},
"dt_txt": "2016-06-20 06:00:00"
},
{
"dt": 1466413200,
"main": {
"temp": 309.22,
"temp_min": 306.611,
"temp_max": 309.22,
"pressure": 1016.83,
"sea_level": 1017.28,
"grnd_level": 1016.83,
"humidity": 61,
"temp_kf": 2.6
},
"weather": [
{
"id": 500,
"main": "Rain",
"description": "light rain",
"icon": "10d"
}
],
"clouds": {
"all": 36
},
"wind": {
"speed": 1.07,
"deg": 132.503
},
"rain": {
"3h": 1.88
},
"sys": {
"pod": "d"
},
"dt_txt": "2016-06-20 09:00:00"
},
{
"dt": 1466424000,
"main": {
"temp": 307.17,
"temp_min": 305.429,
"temp_max": 307.17,
"pressure": 1017.62,
"sea_level": 1018.09,
"grnd_level": 1017.62,
"humidity": 59,
"temp_kf": 1.74
},
"weather": [
{
"id": 804,
"main": "Clouds",
"description": "overcast clouds",
"icon": "04n"
}
],
"clouds": {
"all": 92
},
"wind": {
"speed": 1.33,
"deg": 153.501
},
"rain": {},
"sys": {
"pod": "n"
},
"dt_txt": "2016-06-20 12:00:00"
},
{
"dt": 1466434800,
"main": {
"temp": 303.96,
"temp_min": 303.092,
"temp_max": 303.96,
"pressure": 1019.69,
"sea_level": 1020.02,
"grnd_level": 1019.69,
"humidity": 66,
"temp_kf": 0.87
},
"weather": [
{
"id": 803,
"main": "Clouds",
"description": "broken clouds",
"icon": "04n"
}
],
"clouds": {
"all": 76
},
"wind": {
"speed": 4.26,
"deg": 180.504
},
"rain": {},
"sys": {
"pod": "n"
},
"dt_txt": "2016-06-20 15:00:00"
},
{
"dt": 1466445600,
"main": {
"temp": 301.672,
"temp_min": 301.672,
"temp_max": 301.672,
"pressure": 1019.5,
"sea_level": 1019.9,
"grnd_level": 1019.5,
"humidity": 74,
"temp_kf": 0
},
"weather": [
{
"id": 802,
"main": "Clouds",
"description": "scattered clouds",
"icon": "03n"
}
],
"clouds": {
"all": 48
},
"wind": {
"speed": 3.06,
"deg": 163.501
},
"rain": {},
"sys": {
"pod": "n"
},
"dt_txt": "2016-06-20 18:00:00"
},
{
"dt": 1466456400,
"main": {
"temp": 300.708,
"temp_min": 300.708,
"temp_max": 300.708,
"pressure": 1018.73,
"sea_level": 1019.13,
"grnd_level": 1018.73,
"humidity": 82,
"temp_kf": 0
},
"weather": [
{
"id": 803,
"main": "Clouds",
"description": "broken clouds",
"icon": "04n"
}
],
"clouds": {
"all": 68
},
"wind": {
"speed": 1.66,
"deg": 141.5
},
"rain": {},
"sys": {
"pod": "n"
},
"dt_txt": "2016-06-20 21:00:00"
},
{
"dt": 1466467200,
"main": {
"temp": 301.217,
"temp_min": 301.217,
"temp_max": 301.217,
"pressure": 1020.18,
"sea_level": 1020.61,
"grnd_level": 1020.18,
"humidity": 79,
"temp_kf": 0
},
"weather": [
{
"id": 803,
"main": "Clouds",
"description": "broken clouds",
"icon": "04d"
}
],
"clouds": {
"all": 68
},
"wind": {
"speed": 1.61,
"deg": 91.0013
},
"rain": {},
"sys": {
"pod": "d"
},
"dt_txt": "2016-06-21 00:00:00"
},
{
"dt": 1466478000,
"main": {
"temp": 306.368,
"temp_min": 306.368,
"temp_max": 306.368,
"pressure": 1020.81,
"sea_level": 1021.3,
"grnd_level": 1020.81,
"humidity": 62,
"temp_kf": 0
},
"weather": [
{
"id": 802,
"main": "Clouds",
"description": "scattered clouds",
"icon": "03d"
}
],
"clouds": {
"all": 36
},
"wind": {
"speed": 2.86,
"deg": 298.001
},
"rain": {},
"sys": {
"pod": "d"
},
"dt_txt": "2016-06-21 03:00:00"
},
{
"dt": 1466488800,
"main": {
"temp": 308.988,
"temp_min": 308.988,
"temp_max": 308.988,
"pressure": 1019.11,
"sea_level": 1019.63,
"grnd_level": 1019.11,
"humidity": 49,
"temp_kf": 0
},
"weather": [
{
"id": 802,
"main": "Clouds",
"description": "scattered clouds",
"icon": "03d"
}
],
"clouds": {
"all": 44
},
"wind": {
"speed": 4.12,
"deg": 266.505
},
"rain": {},
"sys": {
"pod": "d"
},
"dt_txt": "2016-06-21 06:00:00"
},
{
"dt": 1466499600,
"main": {
"temp": 305.343,
"temp_min": 305.343,
"temp_max": 305.343,
"pressure": 1017.43,
"sea_level": 1017.76,
"grnd_level": 1017.43,
"humidity": 67,
"temp_kf": 0
},
"weather": [
{
"id": 500,
"main": "Rain",
"description": "light rain",
"icon": "10d"
}
],
"clouds": {
"all": 36
},
"wind": {
"speed": 3.87,
"deg": 212.501
},
"rain": {
"3h": 1.415
},
"sys": {
"pod": "d"
},
"dt_txt": "2016-06-21 09:00:00"
},
{
"dt": 1466510400,
"main": {
"temp": 304.423,
"temp_min": 304.423,
"temp_max": 304.423,
"pressure": 1018.4,
"sea_level": 1018.97,
"grnd_level": 1018.4,
"humidity": 63,
"temp_kf": 0
},
"weather": [
{
"id": 500,
"main": "Rain",
"description": "light rain",
"icon": "10n"
}
],
"clouds": {
"all": 92
},
"wind": {
"speed": 2.05,
"deg": 196.508
},
"rain": {
"3h": 1.075
},
"sys": {
"pod": "n"
},
"dt_txt": "2016-06-21 12:00:00"
},
{
"dt": 1466521200,
"main": {
"temp": 303.07,
"temp_min": 303.07,
"temp_max": 303.07,
"pressure": 1020,
"sea_level": 1020.58,
"grnd_level": 1020,
"humidity": 67,
"temp_kf": 0
},
"weather": [
{
"id": 803,
"main": "Clouds",
"description": "broken clouds",
"icon": "04n"
}
],
"clouds": {
"all": 68
},
"wind": {
"speed": 2.56,
"deg": 178.501
},
"rain": {},
"sys": {
"pod": "n"
},
"dt_txt": "2016-06-21 15:00:00"
},
{
"dt": 1466532000,
"main": {
"temp": 300.893,
"temp_min": 300.893,
"temp_max": 300.893,
"pressure": 1020.32,
"sea_level": 1020.72,
"grnd_level": 1020.32,
"humidity": 80,
"temp_kf": 0
},
"weather": [
{
"id": 500,
"main": "Rain",
"description": "light rain",
"icon": "10n"
}
],
"clouds": {
"all": 56
},
"wind": {
"speed": 1.62,
"deg": 242.5
},
"rain": {
"3h": 1.735
},
"sys": {
"pod": "n"
},
"dt_txt": "2016-06-21 18:00:00"
},
{
"dt": 1466542800,
"main": {
"temp": 300.177,
"temp_min": 300.177,
"temp_max": 300.177,
"pressure": 1019.56,
"sea_level": 1020.01,
"grnd_level": 1019.56,
"humidity": 79,
"temp_kf": 0
},
"weather": [
{
"id": 803,
"main": "Clouds",
"description": "broken clouds",
"icon": "04n"
}
],
"clouds": {
"all": 56
},
"wind": {
"speed": 1.11,
"deg": 237.002
},
"rain": {},
"sys": {
"pod": "n"
},
"dt_txt": "2016-06-21 21:00:00"
},
{
"dt": 1466553600,
"main": {
"temp": 301.577,
"temp_min": 301.577,
"temp_max": 301.577,
"pressure": 1020.42,
"sea_level": 1020.8,
"grnd_level": 1020.42,
"humidity": 74,
"temp_kf": 0
},
"weather": [
{
"id": 802,
"main": "Clouds",
"description": "scattered clouds",
"icon": "03d"
}
],
"clouds": {
"all": 48
},
"wind": {
"speed": 2.11,
"deg": 288.01
},
"rain": {},
"sys": {
"pod": "d"
},
"dt_txt": "2016-06-22 00:00:00"
}
]
}';
//decoding string into json object
$json=json_decode($data,TRUE);
$list=$json['list'];
for($i=0;$i<sizeof($list);$i++)
{
$dt_time=$list[$i]['dt_txt'];
$date = date('Y-m-d',strtotime($dt_time));
$time = date('H:i:s',strtotime($dt_time));
if(!strcmp($time, "15:00:00"))
{
/*
now time is 15:00:00
this is how to get temp_min and max at a particular time
you need to traverse json object
*/
$temp_min=$list[$i]['main']['temp_min'];
$temp_max=$list[$i]['main']['temp_max'];
echo '<br/><br/><h3>'.$date.' Status </h2><br/>';
echo 'Temp_min: '.$temp_min;
echo '<br/>Temp_max: '.$temp_max;
}
}
?>
关于php - 从复杂的嵌套 JSON 对象获取数据(使用 PHP)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/37914937/