php cURL instantiate remote class - php

Question

New to cURL and trying to load PHP file to instantiate a class with below code.
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_NOBODY, 1);
curl_setopt($ch, CURLOPT_FAILONERROR, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$n = new Test_cURL();
I have cross checked and cURL is enable. Also cross check with that file from remote url is loading by
if (curl_exec($ch) !== FALSE) {
return true;
}
else {
return false;
}
But when I am creating new instance it is giving me error.
Fatal error: Class 'Test_cURL' not found in
So how can I load a file allow to instantiate a class from remote?
UPDATE
All required details including sites URL and filename
<?php
/**
* Remote Class
* URL: http://localhost/php-lib/lib.php
* filename: lib.php
*/
class Test_cURL
{
public $msg;
function __construct($message)
{
$this->msg = $message;
}
public function f_msg($add)
{
return $this->msg . ' is the property and ' . $add . ' is the parameter!';
}
}
/**
* cURL file on other site (could be other server)
* URL: http://test-site/index.php
* Filename: index.php
*/
$url = "http://localhost/php-lib/lib.php";
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_NOBODY, 0);
curl_setopt($ch, CURLOPT_FAILONERROR, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$result=curl_exec($ch);
eval($result);
$n = new Test_cURL('loader message');
echo $n->f_msg('method message');
/**
* Error message
*/
Fatal error: Class 'Test_cURL' not found in /var/www/html/test-site/index.php on line 26

Answer 1

You can use file_get_contents then use file_put_contents to store file locally.
include the file and instantiate the class.
Reference: http://blog.kotowicz.net/2010/07/re-hardening-php-how-to-securely.html

Answer 2

Use eval() to run your class and CURLOPT_NOBODY should be false so that it can return string.
Curl code:
<?php
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, '$url');
curl_setopt($ch, CURLOPT_NOBODY, 0);
curl_setopt($ch, CURLOPT_FAILONERROR, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$result=curl_exec($ch);
eval($result);
$n = new Test_cURL();
echo $n->name;
Class Code:
<?php
echo '
class Test_cURL{
public $name="rasmus lerdorf";
}';