Getting JSON Array Data into MySQL - php

Question

I am extremely confused on how to access this data, and get it into MySQL
I have this JSON Data:
{
"serial_number": "70-b3-d5-1a-00-be",
"dateTime": "2020-08-14 20:58",
"passReport": [
{
"id": 1,
"passList": [
{
"passType": 1,
"time": "20:58:38"
}
]
}
]
}
I can get serial_number & dateTime perfectly fine, however I cannot get passType & time into my database
Here is my code for injesting:
//read the json file contents
$jsondata = file_get_contents('php://input');
//convert json object to php associative array
$data = json_decode($jsondata, true);
//mySQL creds & mySQL database & tables
$servername = "localhost";
$username = "my user";
$password = "my pass";
$dbname = "my db";
$serial_number = $data['serial_number'];
$dateTime = $data['dateTime'];
$id = $data['id'];
$passType = $data['passType'];
$time = $data['time'];
// Create connection
$conn = mysqli_connect($servername, $username, $password, $dbname);
// Check connection
if (!$conn) {
die("Connection failed: " . mysqli_connect_error());
}
//Insert into Database Tables
$sql = "INSERT INTO mytable (serial_number, dateTime, passType, time)
VALUES('$serial_number', '$dateTime', '$passType', '$time')";
if (mysqli_query($conn, $sql)) {
echo "New record created successfully";
} else {
echo "Error: " . $sql . "<br>" . mysqli_error($conn);
}
mysqli_close($conn);
?>
I am pretty noobish at PHP, trying to learn! Appreciate any help here. I don't enough knowledge of accessing the data in the array.. Thanks in advance!

Answer 1

$data['passType']; makes no sense. It's clearly not on the same level of the object as serial number, for example.
You need to go down inside the hierarchy of the object. It's inside an array, and then another array.
Try
$data["passReport"][0]["passList"][0]['passType']
and
$data["passReport"][0]["passList"][0]['time']
instead.

Answer 2

<?php
//You can use var_dump to see the structure of decoded json, then you can access.
$jsondata = '{"serial_number":"70-b3-d5-1a-00-be","dateTime":"2020-08-14 20:58","passReport":[{"id":1,"passList":[{"passType":1,"time":"20:58:38"}]}]}';
$jdc = json_decode($jsondata,true);
var_dump($jdc);
var_dump($jdc['passReport'][0]['passList'][0]['passType']);
var_dump($jdc['passReport'][0]['passList'][0]['time']);
?>