function fetchData($url) {
    $ch = curl_init($url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_TIMEOUT, 5);
    $response = curl_exec($ch);
    $error = curl_errno($ch);
    curl_close($ch);
 
    if ($error) {
        return fetchData($url)
    }
 
    return $response;
}