Problem with API calls

<?php

require 'db.php';

header('Content-Type: application/json');

header("Cache-Control: no-cache, no-store, must-revalidate");

header("Pragma: no-cache");

header("Expires: 0");

try {

// Base URLs for images

$baseUrlThumbs = 'https://www.tapijtcenter.be/media/producten/thumbs/';

// Dynamic or default parent value

$parent = isset($_GET['parent']) ? intval($_GET['parent']) : 234;

// SQL-query to fetch all fields where parent matches

$stmt = $pdo->prepare("

SELECT proTitel, proPicAantal, parent, proSamenstelling, proId

FROM gdc_cat_producten

WHERE parent = :parent

");

$stmt->bindValue(':parent', $parent, PDO::PARAM_INT);

$stmt->execute();

// Fetch results

$products = [];

while ($row = $stmt->fetch(PDO::FETCH_ASSOC)) {

if (isset($row['proPicAantal'])) {

// Convert proPicAantal string to array

$images = explode(';', $row['proPicAantal']);

$row['firstImage'] = !empty($images) ? $baseUrlThumbs . $row['proId'] . '/' . $images[0] : null; // First image with thumbs URL

$row['proPicAantal'] = array_map(function($image) use ($baseUrlThumbs, $row) {

return $baseUrlThumbs . $row['proId'] . '/' . $image;

}, $images);

} else {

error_log("proPicAantal is missing for product ID: " . $row['proId'], 3, '/path/to/error.log');

$row['firstImage'] = null;

$row['proPicAantal'] = [];

}

$products[] = $row;

}

// Handle no products found

if (empty($products)) {

echo json_encode([

'success' => true,

'products' => []

], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT);

exit;

}

// Return the results as JSON

echo json_encode([

'success' => true,

'products' => $products

], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT);

} catch (PDOException $e) {

// Error handling

error_log($e->getMessage(), 3, '/path/to/error.log');

echo json_encode([

'success' => false,

'error' => 'An internal error occurred.'

]);

}