php curl function based on sending headers

The task is to write a function that gets all the contents from a website based on sending all the headers that a browser would normally send. Using FF live http headers you can capture all relevant headers and paste them into a below format. Just after visiting a website a session should be still active on the remote server and yet the captured phpsessionid should still be working. However the below script is not working and I am looking for a function that is simple robuust, and always works when all the headers are sent to the remote server that are also sent by the browser. Probably something is wrong or something is missing in the below script. However I checked and it sends exactly the same headers to the server as the browser, but the browser does return results and the below function doesn't. ===> CODE: echo get_contents('[login to view URL]', ''); function get_contents($url,$post){ if($post == ''){ $headers = array(); $headers[] = 'User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:26.0) Gecko/20100101 Firefox/26.0'; $headers[] = 'Accept: */*'; $headers[] = 'Accept-Language: nl,en-us;q=0.7,en;q=0.3'; $headers[] = 'Accept-Encoding: gzip, deflate'; $headers[] = 'X-Requested-With: XMLHttpRequest'; $headers[] = 'Referer: [login to view URL]'; $headers[] = 'Cookie: PHPSESSID=zxddfkojsdaofiguja09fgjad'; $headers[] = 'Connection: keep-alive'; $ch = curl_init(); curl_setopt($ch, CURLOPT_URL,$url); curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10); curl_setopt($ch, CURLOPT_TIMEOUT, 10); curl_setopt($ch, CURLOPT_HEADER, 1); curl_setopt($ch, CURLINFO_HEADER_OUT, true); curl_setopt($ch, CURLOPT_HTTPHEADER, $headers); $body = curl_exec($ch); curl_close($ch); } return $body; }