phpのheader情報取得

<?php
  $headers = getallheaders();
  while (list ($header, $value) = each ($headers)) {
    echo "$header: $value" . "<br>";
  }
?>

Host: hpscript.com
X-Real-Ip: xxx.xx.xxx
X-Forwarded-Proto: http
Listen-Ipaddr: xxx.xx.xxx
Cache-Control: max-age=0
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
Accept-Encoding: gzip, deflate
Accept-Language: ja,en-US;q=0.9,en;q=0.8
Cookie: _ga=GA1.2.792464320.1516407668; _gid=GA1.2.793830752.1537052174

なるほど、chunkedはないな。