How to loop through a JSON array and put data in variables - php

Question

I am trying to get the data from an API and save it to a MySQL database. The problem is when I want to echo the data to check if it gets all the values I'm getting this error:
Notice: Trying to get property of non-object
My JSON data looks like this:
{"AttractionInfo":[{"Id":"sprookjesbos","Type":"Attraction","MapLocation":"1","State":"open","StateColor":"green","WaitingTime":0,"StatePercentage":0},{"Id":"zanggelukkig","Type":"Show","MapLocation":".","State":"gesloten","StateColor":"clear"},
I think this is because it is in an array. Because when I use this bit of code it gives no errors but I have to define the index of the array. What is the best way to loop through my data and put it in variables?
<?php
//Get content
$url = "https://eftelingapi.herokuapp.com/attractions";
$data = json_decode(file_get_contents($url));
//Fetch data
$attractieId = $data->AttractionInfo[0]->Id;
$attractieType = $data->AttractionInfo[0]->Type;
$attractieStatus = $data->AttractionInfo[0]->State;
$attractieStatusKleur = $data->AttractionInfo[0]->StateColor;
$attractieWachttijd = $data->AttractionInfo[0]->WaitingTime;
$attractieStatusPercentage = $data->AttractionInfo[0]->StatePercentage;
?>
I tried to find some solutions but all they use is a foreach loop. But i don't think that'll work right. Can anyone help me in the good direction or tell me how I might possibly fix this? I am not very experienced so any advice is welcome. Thanks in advance.
Update code:
require 'database-connection.php';
//Get content
$url = "https://eftelingapi.herokuapp.com/attractions";
$data = json_decode(file_get_contents($url));
//Fetch data
$attractieId = isset($data->AttractionInfo->Id);
$attractieType = isset($data->AttractionInfo->Type);
$attractieStatus = isset($data->AttractionInfo->State);
$attractieStatusKleur = isset($data->AttractionInfo->StateColor);
$attractieWachttijd = isset($data->AttractionInfo->WaitingTime);
$attractieStatusPercentage = isset($data->AttractionInfo->StatePercentage);
$sql = "INSERT INTO attracties (attractieId, attractieType, attractieStatus, attractieStatusKleur, attractieWachttijd, attractieStatusPercentage)
VALUES ('$attractieId', '$attractieType', '$attractieStatus', '$attractieStatusKleur', '$attractieWachttijd', '$attractieStatusPercentage')";
if ($db->query($sql) === TRUE) {
echo "success";
} else {
echo "Error: " . $sql . "<br>" . $db->error;
}
It says 'success' but when I look into my database it inserted only empty data. I need to add all the attractions to my database so not just one row. So I need to loop through my data.

Answer 1

try this...
$content = json_decode(file_get_contents($url));
foreach($content->AttractionInfo as $data ){
$id = $data->Id;
$type = $data->Type;
$map = $data->MapLocation;
$state = $data->State;
$color = $data->StateColor;
if(!empty($data->WaitingTime)) {
$time = $data->WaitingTime;
}
if(!empty($data->StatePercentage)) {
$percent = $data->StatePercentage;
}
//persist your data into DB....
}

Answer 2

I think you need something like this:
$json = '{"AttractionInfo":[{"Id":"sprookjesbos","Type":"Attraction","MapLocation":"1","State":"open","StateColor":"green","WaitingTime":0,"StatePercentage":0},{"Id":"zanggelukkig","Type":"Show","MapLocation":".","State":"gesloten","StateColor":"clear"}]}';
$arr = json_decode($json);
foreach ($arr->AttractionInfo as $key => $attraction) {
foreach($attraction as $key=> $value) {
print_r($key.' - '.$value.'<br>');
$$key = $value;
}
}
echo '<br>';
echo $Id; // it will be last item/attraction id.
We can improve this code. Just say where and how do you want to use it