$session = curl_init();
curl_setopt($session, CURLOPT_HEADER, true);
curl_setopt($session, CURLOPT_RETURNTRANSFER, true);
curl_setopt($session, CURLOPT_AUTOREFERER, true);
curl_setopt($session, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($session, CURLOPT_SSL_VERIFYHOST, 2);
curl_setopt($session, CURLOPT_RETURNTRANSFER, true);
curl_setopt($session, CURLOPT_VERBOSE, true);

curl_setopt($session, CURLOPT_USERAGENT, 'myAgent');
curl_setopt($session, CURLOPT_POST, true);
curl_setopt($session, CURLOPT_URL, "https://1.domain.com");
curl_setopt($session, CURLOPT_POSTFIELDS, 'code1=val1;code2=val2;');
header("Content-Type: text/plain");


$return = curl_exec($session);

$error = curl_error($session);

if($error) echo "error!";

curl_close($session);

echo $return;