PHP预定义变量$_SERVER实践

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<?php
echo 'PHP_SELF:'.$_SERVER['PHP_SELF'].' ';
echo '__FILE__:'.__FILE__.' ';
var_dump($_SERVER['argv']);
echo ' argc:'.$_SERVER['argc'].' ';
echo 'GATEWAY_INTERFACE:'.$_SERVER['GATEWAY_INTERFACE'].' ';
echo 'SERVER_ADD:'.$_SERVER['SERVER_ADDR'].' ';
echo 'SERVER_NAME:'.$_SERVER['SERVER_NAME'].' ';
echo 'SERVER_SOFTWARE:'.$_SERVER['SERVER_SOFTWARE'].' ';
echo 'SERVER_PROTOCOL:'.$_SERVER['SERVER_PROTOCOL'].' ';
echo 'SERVER_METHOD:'.$_SEVER['SERVER_METHOD'].' ';
echo 'REQUEST_TIME:'.$_SERVER['REQUEST_TIME'].' ';
echo 'QUERY_STRING:'.$_SERVER['QUERY_STRING'].' ';
echo 'DOCUMENT_ROOT:'.$_SERVER['DOCUMENT_ROOT'].' ';
echo 'HTTP_ACCEPT:'.$_SERVER['HTTP_ACCEPT'].' ';
echo 'HPPT_ACCEPT_CHARSET:'.$_SERVER['HTTP_ACCEPT_CHARSET'].' ';
echo 'HTTP_ACCEPT_ENCODING:'.$_SERVER['HTTP_ACCEPT_ENCODING'].' ';
echo 'HTTP_ACCEPT_LANGUAGE:'.$_SERVER['HTTP_ACCEPT_LANGUAGE'].' ';
echo 'HTTP_CONNECTION:'.$_SERVER['HTTP_CONNECTION'].' ';
echo 'HTTP_HOST:'.$_SERVER['HTTP_HOST'].' ';
echo 'HTTP_HEFERER:'.$_SERVER['HTTP_HEFERER'].' ';
echo 'HTTP_USER_AGENT:'.$_SERVER['HTTP_USER_AGENT'].' ';
echo 'REMOTE_ADDR:'.$_SERVER['REMOTE_ADDR'].' ';
echo 'REMOTE_HOST:'.$_SERVER['REMOTE_HOST'].' ';
echo 'REMOTE_PORT:'.$_SERVER['REMOTE_PORT'].' ';
echo 'SCRIPT_FILENAME:'.$_SERVER['SCRIPT_FILENAME'].' ';
echo 'SERVER_ADMIN:'.$_SERVER['SERVER_ADMIN'].' ';
echo 'SERVER_PORT:'.$_SERVER['SERVER_PORT'].' ';
echo 'SERVER_SIGNATURE:'.$_SERVER['SERVER_SIGNATURE'].' ';
echo 'PATH_TRANSLATED:'.$_SERVER['PATH_TRANSLATED'].' ';
echo 'SCRIPT_NAME:'.$_SERVER['SCRIPT_NAME'].' ';
echo 'REQUEST_URI:'.$_SERVER['REQUEST_URI'].' ';
echo 'PHP_AUTH_DIGEST:'.$_SERVER['PHP_AUTH_DIGEST'].' ';
echo 'PHP_AUTH_USER:'.$_SERVER['PHP_AUTH_USER'].' ';
echo 'PHP_AUTH_PW:'.$_SERVER['PHP_AUTH_PW'].' ';
echo 'AUTH_TYPE:'.$_SERVER['AUTH_TYPE'].' ';
echo 'PATH_INFO:'.$_SERVER['PATH_INFO'].' ';

echo 'ORIG_PATH_INFO:'.$_SERVER['ORIG_PATH_INFO'].' ';

结果：

PHP_SELF:/web/demo.php
__FILE__:D:\web\demo.php
array(0) {}
argc:0
GATEWAY_INTERFACE:CGI/1.1
SERVER_ADD:127.0.0.1
SERVER_NAME:localhost
SERVER_SOFTWARE:Apache/2.2.11 (Win32) DAV/2 mod_ssl/2.2.11 OpenSSL/0.9.8i PHP/5.2.9
SERVER_PROTOCOL:HTTP/1.1
SERVER_METHOD:
REQUEST_TIME:1352215161
QUERY_STRING:
DOCUMENT_ROOT:E:/config/xampp/htdocs
HTTP_ACCEPT:text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
HPPT_ACCEPT_CHARSET:
HTTP_ACCEPT_ENCODING:gzip, deflate
HTTP_ACCEPT_LANGUAGE:zh-cn,zh;q=0.8,en-us;q=0.5,en;q=0.3
HTTP_CONNECTION:keep-alive
HTTP_HOST:localhost
HTTP_HEFERER:
HTTP_USER_AGENT:Mozilla/5.0 (Windows NT 6.1; rv:12.0) Gecko/20100101 Firefox/12.0
REMOTE_ADDR:127.0.0.1
REMOTE_HOST:
REMOTE_PORT:64382
SCRIPT_FILENAME:D:/web/demo.php
SERVER_ADMIN:admin@localhost
SERVER_PORT:80
SERVER_SIGNATURE:

Apache/2.2.11 (Win32) DAV/2 mod_ssl/2.2.11 OpenSSL/0.9.8i PHP/5.2.9 Server at localhost Port 80
PATH_TRANSLATED:
SCRIPT_NAME:/web/demo.php
REQUEST_URI:/web/demo.php
PHP_AUTH_DIGEST:
PHP_AUTH_USER:
PHP_AUTH_PW:
AUTH_TYPE:
PATH_INFO:
ORIG_PATH_INFO: