How to set the request headers when performing HTTP requests.

I think we can expect another movie at some point, and here is why.

Getting the HTTP response headers with cURL in PHP is not straight forward. There is no build-in way to do this, but we can still cut out the headers from the response message, if CURLOPT_HEADER is true.

This is basically just Facebooks way of telling you to slow down a bit. You have likely been adding people too fast.

Setting custom HTTP Headers with cURL is useful when changing User Agent or Cookies. Headers can be changed two ways, both using the curl_setopt function.

Tutorial on how to use proxy servers with cURL and PHP