PHP print_r($_SERVER)

    [USER] => www
    [HOME] => /home/www
    [FCGI_ROLE] => RESPONDER
    [SCRIPT_FILENAME] => /data/web/wwwb/info.php
    [QUERY_STRING] => 
    [REQUEST_METHOD] => GET
    [CONTENT_TYPE] => 
    [CONTENT_LENGTH] => 
    [SCRIPT_NAME] => /info.php
    [REQUEST_URI] => /info.php
    [DOCUMENT_URI] => /info.php
    [DOCUMENT_ROOT] => /data/web/wwwb
    [SERVER_PROTOCOL] => HTTP/1.1
    [GATEWAY_INTERFACE] => CGI/1.1
    [SERVER_SOFTWARE] => nginx/1.8.1
    [REMOTE_ADDR] => 121.235.221.122
    [REMOTE_PORT] => 56056
    [SERVER_ADDR] => 10.105.15.43
    [SERVER_PORT] => 80
    [SERVER_NAME] => www.xxxx.cn
    [REDIRECT_STATUS] => 200
    [HTTP_HOST] => www.xxxx.cn
    [HTTP_USER_AGENT] => Mozilla/5.0 (Windows NT 6.3; WOW64; rv:49.0) Gecko/20100101 Firefox/49.0
    [HTTP_ACCEPT] => text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
    [HTTP_ACCEPT_LANGUAGE] => zh-CN,zh;q=0.8,en-US;q=0.5,en;q=0.3
    [HTTP_ACCEPT_ENCODING] => gzip, deflate
    [HTTP_COOKIE] => CNZZDATA1258390279=2064202449-1473843773-%7C1475904336; PHPSESSID=p3cv7bogdv0qid822bfqjvkpj4
    [HTTP_CONNECTION] => keep-alive
    [HTTP_UPGRADE_INSECURE_REQUESTS] => 1
    [HTTP_CACHE_CONTROL] => max-age=0
    [PHP_SELF] => /info.php
    [REQUEST_TIME_FLOAT] => 1476326052.8471
    [REQUEST_TIME] => 1476326052