javascript - How to emulate Ajax request using PHP CURL? -

i getting 400 http_code error when send ajax request curl below code.

    $header = array(     "accept : application/json, text/javascript, */*; q=0.01",     "accept-encoding : gzip, deflate",     "accept-language : en-us,en;q=0.5",     "content-type : application/json; charset=utf-8",     "host : https://some.com",     "referer : https://some.com/dashboard/reports",     "x-requested-with : xmlhttprequest"      );     $c      = curl_init('https://domain.com/report.php');     //curl_setopt($c, curlopt_ssl_verifypeer, false);     //curl_setopt($c, curlopt_verbose, true);      curl_setopt($c, curlopt_useragent, $_server['http_user_agent']);     curl_setopt($c, curlopt_returntransfer, 1);     curl_setopt( $c, curlopt_post, true );     curl_setopt( $c, curlopt_postfields, $data_url );     curl_setopt($c, curlopt_httpheader, $header);     //curl_setopt($ch, curlopt_httpheader, array("x-requested-with: xmlhttprequest"));      curl_setopt($c, curlopt_cookiefile, $cookie_jar);     $page     = curl_exec($c);     $httpcode = curl_getinfo($c); 

// getting following response after making curl request

array (     [url] => some_url     [content_type] =>      [http_code] => 400     [header_size] => 70     [request_size] => 935     [filetime] => -1     [ssl_verify_result] => 0     [redirect_count] => 0     [total_time] => 0.205562     [namelookup_time] => 0.000132     [connect_time] => 0.032866     [pretransfer_time] => 0.170225     [size_upload] => 272     [size_download] => 0     [speed_download] => 0     [speed_upload] => 1323     [download_content_length] => 0     [upload_content_length] => 272     [starttransfer_time] => 0.205498     [redirect_time] => 0     [certinfo] => array         (         )      [primary_ip] => 66.35.58.70     [primary_port] => 443     [local_ip] => 198.1.92.85     [local_port] => 53627     [redirect_url] =>  ) ////  

i not sure able query ssl site following code. there several things user agent, cookiefile, ssl verify, url form encoded post data , subsequent request should use same cookie , agent data

 $config['useragent'] = 'mozilla/5.0 (windows nt 6.2; wow64; rv:17.0) gecko/20100101 firefox/17.0'; $ch = curl_init(); curl_setopt($ch,curlopt_url,$url); curl_setopt($ch, curlopt_useragent, $config['useragent']); curl_setopt($ch, curlopt_referer, 'http://google.com/'); $dir = dirname(__file__); $config['cookie_file'] = $dir."/".md5($_server['remote_addr']) . '.txt'; curl_setopt($ch, curlopt_cookiefile, $config['cookie_file']); curl_setopt($ch, curlopt_cookiejar, $config['cookie_file']); curl_setopt($ch, curlopt_verbose, 1); curl_setopt($ch, curlopt_nobody, 0);     curl_setopt($ch, curlopt_ssl_verifyhost, false); curl_setopt($ch, curlopt_ssl_verifypeer, false); curl_setopt($ch, curlopt_followlocation, true); curl_setopt($ch, curlopt_returntransfer, true); curl_setopt($ch,curlopt_header,0); $html=curl_exec($ch); 

subsequent call request(note using cookie, useragent generated in first request)

$post = 'city_id=3&length-3'; $headers = array(); $headers[] = 'accept: application/json, text/javascript, */*; q=0.01';  $headers[] = 'accept-language: en-us,en;q=0.5'; $headers[] = 'content-length:'.strlen($post); $headers[] = 'content-type: application/x-www-form-urlencoded; charset=utf-8'; $headers[] = 'x-requested-with: xmlhttprequest';  curl_setopt($ch, curlopt_httpheader, $headers);  $ch = curl_init(); curl_setopt($ch,curlopt_url,$link); curl_setopt($ch, curlopt_useragent, $config['useragent']);           curl_setopt($ch, curlopt_cookiefile, $config['cookie_file']); curl_setopt($ch, curlopt_cookiejar, $config['cookie_file']); curl_setopt($ch, curlopt_verbose, 1); curl_setopt($ch, curlopt_nobody, 0);     curl_setopt($ch, curlopt_ssl_verifyhost, false); curl_setopt($ch, curlopt_ssl_verifypeer, false); curl_setopt($ch, curlopt_followlocation, true); curl_setopt($ch, curlopt_returntransfer, true); curl_setopt($ch,curlopt_header,0); $linkhtml=curl_exec($ch);