Errors when adding data to a database with PHP - php

Question

I have to make a web app that gets information from my database, that gets its info from an API). Then I have to show items under certain conditions.
But when I try to add the data from the API, I got a strange message:
Notice: Trying to get property of non-object in c:\xampp\htdocs\IMP03\inleveropdracht3\libs\php\function.php on line 21
Warning: Invalid argument supplied for foreach() in C:\xampp\htdocs\IMP03\inleveropdracht3\libs\php\function.php on line 21
Here is my PHP code:
<?php
require_once 'settings.php';
$mysqli = mysqli_connect($db_host, $db_user, $db_password, $db_database);
if (mysqli_connect_error()) {
echo mysqli_connect_error($mysqli) . "We are not able to connect to the online database";
}
jsondecode($mysqli);
if (isset($_GET['club']) && !empty($_GET['club'])) {
jsondecode($mysqli);
} else if (isset($_GET['thuisPoint']) && !empty($_GET['thuisPoint']) && ($_GET['uitPoint']) && ($_GET['uitPoint'])) {
updatePoints($mysqli);
} else {
getWedstrijd($mysqli);
}
function jsondecode($mysqli) {
$apiLink = 'http://docent.cmi.hr.nl/moora/imp03/api/wedstrijden?club=';
// $club = $_GET['club'];
$data = json_decode(file_get_contents($apiLink . "Ajax"));
foreach ($data->data as $info) {
$thuisClub = $info->homeClub;
$uitClub = $info->awayClub;
addWestrijden($mysqli, $thuisClub, $uitClub);
}
}
//querys
function addWestrijden($mysqli, $thuisClub, $uitClub) {
$query = "INSERT INTO wedstrijd VALUES(null, '$thuisClub', '$uitClub')";
$resultAddWedstrijd = mysqli_query($mysqli, $query) or die(mysqli_error($mysqli));
getWedstrijd($mysqli);
}
function getWedstrijd($mysqli) {
$query = "SELECT * FROM wedstrijd ORDER BY thuisClub DESC";
$resultGetWedstijd = mysqli_query($mysqli, $query) or die(mysqli_error($mysqli));
while ($result = mysqli_fetch_assoc($resultGetWedstijd)) {
$rows [] = $result;
}
header("Content-Type: application/json");
echo json_encode($rows);
exit;
}
function updatePoints($mysqli) {
$id = $_GET['id'];
$thuisPoints = $_GET['thuisPoint'];
$uitPoints = $_GET['uitPoint'];
$query = "UPDATE wedstrijd "
. "SET thuisPunt = '$thuisPoints', uitPunt = '$uitPoints') "
. "WHERE id = '$id'";
mysqli_query($mysqli, $query) or die(mysqli_error($mysqli));
getWedstrijd($mysqli);
}
I did modify it a bit so it would add data from the API. I really would appreciate it if someone could help me.

Answer 1

Change your foreach to:
foreach ($data as $data => $info)