This is my code. It does not show any errors but only the first 2 friends are tagged!
for ($i=0;$i<count($friendsID);$i++)
{
$post_url = "https://graph.facebook.com/".$upload_photo['id']."/tags/".$friendsID[$i]."?access_token=".$token."&x=80&y=".$y."&method=POST";
$response = file_get_contents($post_url);
$post_url = urlencode($post_url);
$response = file_get_contents($post_url);
$y = $y + 53;
}
I'm not receiving any error, but the code just does not tag all the people supposed to be tagged !