fetching multiple rows and display in json - php

Question

I have a PHP code like:
while ($row2 = mysqli_fetch_assoc($check2)) {
// $leadarray[] = $row2;
$service_id[$i] = $row2['service_id'];
$row1['service_id'][$i] = $service_id[$i];
$service_name[$i] = $row2['service_name'];
$row1['service_name'][$i] = $service_name[$i];
$i++;
}
$leadarray[] = $row1;
$trimmed1['leaddetails'] = str_replace('\r\n', '', $leadarray);
echo json_encode($trimmed1);
getting output like
{
"leaddetails": [
{
"service_id": [
"7",
"2"
],
"service_name": [
"Past Control Services",
"Civil Finishing"
],
}
]
}
I want output like:
"service_id": [
1: "7",
2: "2"
],
"service_name": [
1: "Past Control Services",
2: "Civil Finishing"
],
or
[
"service_id": "7",
"service_name": "Past Control Services",
"service_id": "2",
"service_name": "Civil Finishing",
]

Answer 1

$trimmed1 is considered an object when passing it to json_encode (associative array in PHP) because you explicitly give it a key (considered an object property in JSON):
$trimmed1 = [];
$trimmed1['leaddetails'] = 'foobar';
This will result in json_encode encoding $trimmed1 into an object:
{
"leaddetails": "foobar"
}
To get your desired result, have $trimmed1 be considered an ARRAY when passed to json_encode.
$trimmed1[] = str_replace('\r\n', '', $leadarray); // push instead of assign

Answer 2

second option is not posible
you can make like this
[{"service_id":"7", "service_name":"Past Control Services"}, {"service_id":"2", "service_name":"Civil Finishing"}]

Answer 3

[{"service_id":"7", "service_name":"Past Control Services"}, {"service_id":"2", "service_name":"Civil Finishing"}]
using class for make like that
class Data{
$service_id;
$service_name;
}
$obj = new Array();
while ($row2 = mysqli_fetch_assoc($check2)){
$data = new Data();
$data->service_id = $row2['service_id'];
$data->service_name = $row2['service_name'];
array_push($obj, $data);
}
echo json_encode($obj);

Answer 4

Create the 2-dimensional array first. Then push onto the nested arrays during the loop.
$result = ["service_id" => [], "service_name" = []];
while ($row2 = mysqli_fetch_assoc($check2)) {
$result["service_id"][] = $row["service_id"];
$result["service_name"][] = $row["service_name"];
}
echo json_encode($result);