Pull nested JSON data using foreach loop in php - php

Question

I want to pull data from below JSON format using PHP (foreach loop).
User detail is correspondence to house detail and house detail correspondence to individual meter reading.
I want to show Username, Device_No and all meter_detail field. Please help me out.
{
"id": 7,
"Username": "user",
"Housename": "Leela",
"Houses_list": [{
"id": 1,
"Device_No": 1111,
"meter_detail": [{
"id": 1,
"flow": 12,
"date": "2020-02-13T12:05:14.709Z",
"opening": 5,
"volume": 1234
},
{
"id": 2,
"flow": 32,
"date": "2020-02-13T12:05:26.821Z",
"opening": 2,
"volume": 1235
}
]
},
{
"id": 2,
"Device_No": 231,
"meter_detail": [{
"id": 3,
"flow": 78,
"date": "2020-02-13T12:05:41.331Z",
"opening": 5,
"volume": 7854
}]
}
]
}

Answer 1

You need to convert the JSON to an array by using json_decode(). Then a couple of foreach loops would do work for you:
<?php
$json = '{
"id": 7,
"Username": "user",
"Housename": "Leela",
"Houses_list": [{
"id": 1,
"Device_No": 1111,
"meter_detail": [{
"id": 1,
"flow": 12,
"date": "2020-02-13T12:05:14.709Z",
"opening": 5,
"volume": 1234
},
{
"id": 2,
"flow": 32,
"date": "2020-02-13T12:05:26.821Z",
"opening": 2,
"volume": 1235
}
]
},
{
"id": 2,
"Device_No": 231,
"meter_detail": [{
"id": 3,
"flow": 78,
"date": "2020-02-13T12:05:41.331Z",
"opening": 5,
"volume": 7854
}]
}
]
}';
$input = json_decode($json, true);
echo 'Username: '.$input['Username'].'<br>';
foreach ($input['Houses_list'] as $device){
echo '<br>Device No: '.$device['Device_No'].'<br>';
foreach ($device['meter_detail'] as $metrics){
echo '<table style="border: 1px solid black">';
foreach ($metrics as $key => $metric){
echo '<tr><td>'.$key.'</td><td>'.$metric.'</td></tr>';
}
echo '</table>';
}
}
?>
Output: