====== PHP - Curl to Facebook ======

===== To login to Facebook using curl. =====

<code php>
$login_email = 'email';
$login_pass = 'password';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://www.facebook.com/login.php');
curl_setopt($ch, CURLOPT_POSTFIELDS,'email='.urlencode($login_email).'&pass='.urlencode($login_pass).'&login=Login');
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_COOKIEJAR, "cookies.txt");
curl_setopt($ch, CURLOPT_COOKIEFILE, "cookies.txt");
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.3) Gecko/20070309 Firefox/2.0.0.3");
curl_setopt($ch, CURLOPT_REFERER, "http://www.facebook.com");
$page = curl_exec($ch) or die(curl_error($ch));
echo $page;
</code>

The cookie file 'cookies.txt' exists, and has 644 permissions. 

An alternative approach is to disable cookies using:

<code php>
curl_setopt($ch, CURLOPT_COOKIESESSION, false);
</code>

===== Post to a Facebook User's Wall =====

<code php>
$attachment =  array(
'access_token' => $token,
'message' => $msg,
'name' => $title,
'link' => $uri,
'description' => $desc,
'picture'=>$pic,
'actions' => json_encode(array('name' => $action_name,'link' => $action_link))
);

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,'https://graph.facebook.com/fbnameorid/feed');
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $attachment);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);  // To suppress the curl output.
$result = curl_exec($ch);
curl_close ($ch);
</code>


===== Upload a picture to Facebook using Curl =====

To upload a picture from your server, change the request url to: **graph.facebook.com/fbnameorid/photos** and add an array item called 'file' with value '@'. [path to file]