以下は、各環境変数を取得して、ブラウザ画面に表示するサーバサイドプログラムのサンプルです。
<?php
$strServerName = $_SERVER["SERVER_NAME"];
$strGatewayInterface = $_SERVER["GATEWAY_INTERFACE"];
$strServerProtocol = $_SERVER["SERVER_PROTOCOL"];
$strRequestMethod = $_SERVER["REQUEST_METHOD"];
$strPathInfo = $_SERVER["PATH_INFO"];
$strScriptName = $_SERVER["SCRIPT_NAME"];
$strQueryString = $_SERVER["QUERY_STRING"];
$strRemoteAddr = $_SERVER["REMOTE_ADDR"];
$strRemoteHost = $_SERVER["REMOTE_HOST"];
$numContentLength = $_SERVER["CONTENT_LENGTH"];
$strHttpUserAgent = $_SERVER["HTTP_USER_AGENT"];
$strHttpReferer = $_SERVER["HTTP_REFERER"];
?>
<html>
<body>
SERVER_NAME = <?=$strServerName?><br>
GATEWAY_INTERFACE = <?=$strGatewayInterface?><br>
SERVER_PROTOCOL = <?=$strServerProtocol?><br>
REQUEST_METHOD = <?=$strRequestMethod?><br>
PATH_INFO = <?=$strPathInfo?><br>
SCRIPT_NAME = <?=$strScriptName?><br>
QUERY_STRING = <?=$strQueryString?><br>
REMOTE_ADDR = <?=$strRemoteAddr?><br>
REMOTE_HOST = <?=$strRemoteHost?><br>
CONTENT_LENGTH = <?=$numContentLength?><br>
HTTP_USER_AGENT = <?=$strHttpUserAgent?><br>
HTTP_REFERER = <?=$strHttpReferer?><br>
</body>
</html>
$strServerName = $_SERVER["SERVER_NAME"];
$strGatewayInterface = $_SERVER["GATEWAY_INTERFACE"];
$strServerProtocol = $_SERVER["SERVER_PROTOCOL"];
$strRequestMethod = $_SERVER["REQUEST_METHOD"];
$strPathInfo = $_SERVER["PATH_INFO"];
$strScriptName = $_SERVER["SCRIPT_NAME"];
$strQueryString = $_SERVER["QUERY_STRING"];
$strRemoteAddr = $_SERVER["REMOTE_ADDR"];
$strRemoteHost = $_SERVER["REMOTE_HOST"];
$numContentLength = $_SERVER["CONTENT_LENGTH"];
$strHttpUserAgent = $_SERVER["HTTP_USER_AGENT"];
$strHttpReferer = $_SERVER["HTTP_REFERER"];
?>
<html>
<body>
SERVER_NAME = <?=$strServerName?><br>
GATEWAY_INTERFACE = <?=$strGatewayInterface?><br>
SERVER_PROTOCOL = <?=$strServerProtocol?><br>
REQUEST_METHOD = <?=$strRequestMethod?><br>
PATH_INFO = <?=$strPathInfo?><br>
SCRIPT_NAME = <?=$strScriptName?><br>
QUERY_STRING = <?=$strQueryString?><br>
REMOTE_ADDR = <?=$strRemoteAddr?><br>
REMOTE_HOST = <?=$strRemoteHost?><br>
CONTENT_LENGTH = <?=$numContentLength?><br>
HTTP_USER_AGENT = <?=$strHttpUserAgent?><br>
HTTP_REFERER = <?=$strHttpReferer?><br>
</body>
</html>