HEADER DATA:
array(4) {
  ["Host"]=>
  string(18) "mail.testuj.org.pl"
  ["Accept"]=>
  string(3) "*/*"
  ["User-Agent"]=>
  string(88) "Mozilla/5.0 (compatible; DotBot/1.2; +https://opensiteexplorer.org/dotbot; help@moz.com)"
  ["Accept-Charset"]=>
  string(36) "utf-8;q=0.7,iso-8859-1;q=0.2,*;q=0.1"
}