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

Exception or error:

I am getting 400 http_code error when I send a Ajax request with CURL below is my 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);

// I am 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] => 
)
//// 
How to solve:

I am not sure it would help you but i am able to successfully query SSL site with the following code.
There are several things like user agent, cookiefile, SSL verify, url form encoded for post data and subsequent request should use the same cookie and 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 it is using the 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);

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