{
        $handle = curl_init($url);
        curl_setopt($handle, CURLOPT_RETURNTRANSFER, TRUE);
        $response = curl_exec($handle);
        $httpCode = curl_getinfo($handle, CURLINFO_HTTP_CODE);
        if ($httpCode == 404) {
            return false;
        } else {
            return true;
        }
        curl_close($handle);
    }
}
//Creating instance of class Request when query is submitted
if (isset($_POST['q'])) {
    //Sometime Javascript wont work for default page 1 so setting 1 if its not set
    if ($_POST['p'] == '' || $_POST['p'] == 1) {
        $_POST['p'] = false;
    }
    if (!isset($_POST['sort'])) {
        $_POST['sort'] = false;
    }
    //Creating Class instance in Object
    $object = new Request();
    $object->GetData($_POST['q'], $_POST['p'], $api_key, $_POST['sort']);
}
//Creating instance of class Amazon when buy button is submitted
if (isset($_POST['isbn'])) {
    $newLink = new AmazonLink();
    $newLink->GetAmazonLink($_POST['isbn'], $amazon_id);
}