convert-prices.php

<?php
// Get the currency code from the query string
$currency = $_GET['currency'];

// Set up the API endpoint and parameters
$endpoint = 'https://openexchangerates.org/api/latest.json';
$params = array(
  'app_id' => 'APP_ID_HERE',
  'base' => 'USD', // Set the base currency for conversion
);

// Send request
$url = $endpoint . '?' . http_build_query($params);
$response = file_get_contents($url);

// Parse response
if ($response !== false) {
  $data = json_decode($response, true);
  // Exchange rates are in the 'rates' field of the JSON data
  $exchange_rates = $data['rates'];
} else {
  // Handle an error
  http_response_code(500);
  echo 'Error fetching exchange rates';
  exit;
}

// TODO: Convert prices to the requested currency using the exchange rate
// ...

// Return the converted prices as a JSON response

header('Content-Type: application/json');
echo json_encode($converted_prices);

// Should look like:
// {
//  "plan1": "$400.77",
//  "plan2": "$727.20",
//  "plan3": "$968.28"
// }

?>