function example8($api_key, $symbol)
{
$quandl = new Royopa\Quandl\Quandl($api_key, "csv");
$result = $quandl->getSymbol("DEBUG/INVALID");
if ($quandl->error and !$result) {
return $quandl->error . " - " . $quandl->last_url;
}
return $result;
}
<?php
//--------------------------------------------------------------
// Example: Quandl API with Cache
//--------------------------------------------------------------
require "./vendor/autoload.php";
if (file_exists(__DIR__ . '/.env')) {
$dotenv = new Dotenv\Dotenv(__DIR__);
$dotenv->load();
}
Kint::enabled(true);
$api_key = getenv('QUANDL_API_KEY');
$quandl = new Royopa\Quandl\Quandl($api_key, "csv");
$quandl->cache_handler = 'cacheHandler';
$data = $quandl->getSymbol("GOOG/NASDAQ_AAPL");
// A simple example of a cache handler.
// This function will be called by the Quandl class.
// When action == "get", you should return a cached
// object or false.
// When action == "set", you should perform the save
// operation to your cache.
function cacheHandler($action, $url, $data = null)
{
$cache_key = md5("quandl:{$url}");
$cache_file = __DIR__ . "/{$cache_key}";
if ($action == "get" and file_exists($cache_file)) {
return file_get_contents($cache_file);
}
if ($action == "set") {
file_put_contents($cache_file, $data);
}
