How to create JSON API service from mysql database in php - php

Question

I have following mysql database table
id | majorFoodName | cropName | foodType | foodName | quantity | form
1 | Recipe1 | Rice | Breakfast | Foodname1 | 500+60 | 2000
4 | Recipe2 | Rice | Breakfast | Foodname2 | 500 | 1000
6 | Recipe1 | Wheat | Breakfast | Foodname2 | 518 | 1000
I have written following php code to give JSON API output
$sql = "SELECT * FROM food WHERE cropName = 'Rice' AND foodName =
'Foodname1' ";
$result = mysqli_query($connect, $sql);
$num_rows = mysqli_num_rows($result);
if ($num_rows > 0) {
$jsonData = array();
while ($array = mysqli_fetch_row($result)) {
$jsonData[] = $array;
}
}
class Emp {
public $majorFoods = "";
}
$e = new Emp();
$e->majorFoods = $jsonData;
header('Content-type: application/json');
echo json_encode($e);
I am getting following JSON output
{
"majorFoods": [
[
"1",
"Recipe1",
"Rice",
"Breakfast",
"Foodname1",
"500+60",
"2000"
]
]
}
I need to give following API JSON format for all cropName and all foodName
{
"Rice": [
{
"foodName1": {
"majorFoodName": "Receipe1",
"quantity": "500+60",
"form": "2000" }
"foodName2": {
"majorFoodName": "Receipe2",
"quantity": "500",
"form": "1000" }
]
"Wheat": [
{
"foodName2": {
"majorFoodName": "Receipe1",
"quantity": "518",
"form": "1000" }
]
}
Kindly help in improving the php code to get desired API JSON response.

Answer 1

When your building up your array of data, use the crop type as the main index and create sub arrays of the extra data you need to store.
while ($array = mysqli_fetch_assoc($result)) {
$cropData = array ( $array['foodName'] =>
array( 'majorFoodName' => $array['majorFoodName'],
'quantity' => $array['quantity'],
'form' => $array['form'] ));
$jsonData[$array['cropName']][] = $cropData;
}
Note that I use mysqli_fetch_assoc so that I can refer to the result fields with the column names.
The line
$jsonData[$array['cropName']][] = $cropData;
Accumulates all of the data for a particular crop name together, adding the new data to the end of the array (using []).