$array = array(

"REMOTE_ADDR",

"DOCUMENT_ROOT",

"GATEWAY_INTERFACE",

"SERVER_SOFTWARE",

"SERVER_NAME",

"SERVER_PROTOCOL",

"SERVER_PORT",

"SERVER_ADMIN",

"SERVER_SIGNATURE",

"REQUEST_METHOD",

"REQUEST_URI",

"PATH_INFO",

"PATH_TRANSLATED",

"SCRIPT_NAME",

"SCRIPT_FILENAME",

"QUERY_STRING",

"REMOTE_HOST",

"REMOTE_ADDR",

"REMOTE_USER",

"REMOTE_IDENT",

"CONTENT_TYPE",

"CONTENT_LENGTH",

"HTTP_ACCEPT",

"HTTP_ACCEPT_CHARSET",

"HTTP_ACCEPT_LANGUAGE",

"HTTP_ENCODING",

"HTTP_USER_AGENT",

"HTTP_CONNECTION",

"HTTP_HOST",

"HTTP_REFERER",

"AUTH_TYPE"

);

echo '';

echo '

';

echo 'CGI Environment Variables';

echo 'NameValue';

$count = count($array);

for($i=0;$i<$count;$i++){

$value = getenv($array[$i]);

if($value){

echo "$array[$i]" . $value . "";

}

//下面的语句也可以哦

// if(isset($$array[$i])){

// echo "$array[$i]" . $$array[$i] . "";

// }

}

echo '

';

echo '';

?>