Cookie issue in CURL (PHP) - Cookie information not attached in CURL headers -

i have code

<?php     $mloginurl = "https://www.test.com/login";     $mcookiefile = dirname(__file__).'/tmpcookies/cookie'.rand().'.txt';      define('user_agent', 'mozilla/5.0 (windows nt 5.1) applewebkit/537.36 (khtml, gecko) chrome/35.0.2309.372 safari/537.36');     define('cookie_file', $mcookiefile);     define('login_form_url', $mloginurl);     define('login_action_url', $mloginurl);      $postvalues = array(         'user[email]' => "mymail@email.com",         'user[password]' => "mypassword"     );      $headers = array(                 "accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5",                 "cache-control: max-age=0",                 "connection: keep-alive",                 "keep-alive: 300",                 "accept-charset: iso-8859-1,utf-8;q=0.7,*;q=0.7",                 "accept-language: en-us,en;q=0.5",                 "pragma: "             );      $curl = curl_init();     curl_setopt($curl, curlopt_verbose, true);     curl_setopt($curl, curlopt_url, login_action_url);     curl_setopt($curl, curlopt_post, true);     curl_setopt($curl, curlopt_postfields, http_build_query($postvalues));     curl_setopt($curl, curlopt_ssl_verifypeer,false);     curl_setopt($curl, curlopt_ssl_verifyhost, false);     curl_setopt($curl, curlopt_cookiejar, cookie_file);     curl_setopt($curl, curlopt_cookiefile, cookie_file);     curl_setopt($curl, curlopt_useragent, user_agent);     curl_setopt($curl, curlopt_returntransfer, true);     curl_setopt($curl, curlopt_referer, login_form_url);     curl_setopt($curl, curlopt_followlocation, true);     curl_setopt($curl, curlopt_httpheader,$headers) ;     curl_setopt($curl, curlinfo_header_out, true);     $res = curl_exec($curl);     $info = curl_getinfo($curl);     print_r($info['request_header']);     exit; ?>  

this works fine on local computer , 1 of servers , shows following output

get / http/1.1 user-agent: mozilla/5.0 (windows nt 5.1) applewebkit/537.36 (khtml, gecko) chrome/35.0.2309.372 safari/537.36 host: www.test.com referer: https://www.test.com/login cookie: _property_session=wjroweyvthnyae5zb29jvk04wgm0z3fybmhmy1zievdbc2n6d2n3umviaxlzdfnhr1dsbun4qvh6affsrjfpyktybmdnrglxng0ywwcremezcklktne1ze1lttm0euqrsg90svhrrzhvyw5rwmfqtvhbmjvcwjbtb1fsc0rrteh2rjhhsfi3ahkwa3u4n3y3czjhtzjun2zgbwrrn0nra2z6otr4ahhvvg42bvvrs3kwtexul1hmn2joz0xrd2g3vvdimc81cghlqzjjotjvc2ryajiwake0vjzqrnhtehbleflttgf4z3hpugjeb0e3nlo2s3bwmelqnnvkawhdvs0tc0pcrlozsve5bxrhqxlhwe1ibtl4ut09--67cf6e056b84b4cae4d275507f544927802eb78d accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5 cache-control: max-age=0 connection: keep-alivekeep-alive: 300 accept-charset: iso-8859-1,utf-8;q=0.7,*;q=0.7 accept-language: en-us,en;q=0.5  

which means cookie created , attached in headers of curl (as can see in above header print of curl.) cookie file created @ mentioned location.

but on 1 of server code not work per expectations , gives following output

post /users/sign_in? http/1.1 user-agent: mozilla/5.0 (windows nt 5.1) applewebkit/537.36 (khtml, gecko) chrome/35.0.2309.372 safari/537.36 host: www.test.com referer: https://www.test.com/login accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5 cache-control: max-age=0 connection: keep-alive keep-alive: 300 accept-charset: iso-8859-1,utf-8;q=0.7,*;q=0.7 accept-language: en-us,en;q=0.5 content-length: 76 content-type: application/x-www-form-urlencoded  

means cookie information not attached in headers of curl. have checked cookie file created in (problematic) server , having cookie contents still cookie contents not included in curl headers. temporary cookie directory mentioned having full rights/permissions (777) users.

php version 5.4.19 , curl version 7.19.7 on problematic server.

if can help? have tried of solutions found on internet.

thanks in advance.

$mcookiefile = dirname(__file__).'/tmpcookies/cookie'.rand().'.txt';

remove rand() ... static file