How to pass custom headers to cURL? - php

Question

Sorry for my English. Tell me how to pass non-standard headers in cURL
$headers = array("Accept: application/json, text/plain, /*",
"Captcha: NDRMR9",
"Referer: https://avtokod.mos.ru/AutoHistory/");
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "https://avtokod.mos.ru/AutoHistory/GetByLicensePlate");
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query(array('licensePlate' => $licensePlate, 'sts' => $sts)));
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_setopt($ch, CURLINFO_HEADER_OUT, true);
curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:61.0) Gecko/20100101 Firefox/61.0');
curl_setopt($ch, CURLOPT_COOKIEFILE, $_SERVER["DOCUMENT_ROOT"]."/cookie.txt");
curl_setopt($ch, CURLOPT_COOKIEJAR, $_SERVER["DOCUMENT_ROOT"]."/cookie.txt");
$response = curl_exec($ch);
$info = curl_getinfo($ch);
curl_close($ch);
echo "<pre>";
echo $response;
print_r($info['request_header']);
But I get an error
{"code":1,"message":"Необходимо ввести капчу"}
I. e. I didn't send a captcha.
I can see that in the debugger the Captcha parameter is passed in the header
open image
What am I doing wrong?