$_server Analysis of server variable _php skills

In-depth analysis of server variable $_server:

1, $_session[' php_self ']--gets the filename of the currently executing script

2, $_server[' Server_protocol ']--the name and version of the communication protocol when the page is requested. For example, "http/1.0".

3, $_server[' Request_time ']--time stamp at the start of the request. Valid from PHP 5.1.0. The same as the time function effect.

4, $_server[' argv ']--the arguments passed to the script. I tried it, and the Get method got the $_server[' argv '][0];post method could not assign him a value.

5, $_server[' server_name ']--Returns the current host name.

6, $_server[' Server_software ']--a string of server identities, given in the header information in response to the request. such as microsoft-iis/6.0

7, $_server[' Request_method ']--the request method when accessing the page. For example:, POST and put.

8, $_server[' query_string ']--a string of queries (query) (the first question mark in the URL?) After the content).

9, $_server[' Document_root ']--the document root directory where the script is currently running. Defined in the server configuration file. such as E:\server

10, $_server[' http_accept ']--the content of the current requested ACCEPT: header information.

11, $_server[' Http_accept_charset ']--the content of the current requested Accept-charset: header information. For example: "Iso-8859-1,*,utf-8".

12, $_server[' http_accept_encoding ']--the content of the current requested accept-encoding: header information. For example: "gzip".

13, $_server[' Http_accept_language ']--the content of the current requested accept-language: header information. For example: "en".

14, $_server[' http_connection ']--the content of the current requested CONNECTION: header information. For example: "Keep-alive".

15, $_server[' Http_host ']--the contents of the current requested HOST: header information.

16, $_server[' Http_referer ']--link to the URL address of the previous page of the current page.

17, $_server[' Http_user_agent ']--Returns the browser information used by the user. You can also use Get_browser () to get this information.

18, $_server[' HTTPS ']--if accessed through HTTPS, it is set to a non-null value, otherwise it returns off.

19, $_server[' REMOTE_ADDR ']--is browsing the current page user's IP address.

20, $_server[' Remote_host ']--the host name of the user who is browsing the current page. The reverse domain name resolution is based on the user's remote_addr. If local test returns 127.0.0.1

21, $_server[' Remote_port ']--the port the user uses to connect to the server. I didn't pass the test on this machine and I don't know why.

22, $_server[' Script_filename ']--the absolute pathname of the currently executing script. such as return E:\server\index.php

23, $_server[' Server_admin ']--this value indicates the Server_admin parameter in the Apache server configuration file. If the script is running on a virtual host, the value is the value of that virtual host

24, $_server[' Server_port ']--the port used by the server. The default is "80". If you are using SSL secure connections, this value is the HTTP port that the user sets.

25, $_server[' server_signature ']--a string containing the server version and the virtual host name.

26, $_server[' path_translated ']--the basic path of the file system (not the document root) where the current script resides. This is the result of a virtual to real-path image of the server. Apache 2 users can use Acceptpathinfo on in httpd.conf to define PATH_INFO.

27, $_server[' Script_name ']--Contains the path of the current script. This is useful when the page needs to point to itself. __FILE__ contains the absolute path and file name of the current file (for example, include files).

28, $_server[' Request_uri ']--the URI required to access this page. For example, "/index.html".

29, $_server[' Php_auth_digest ']--As for the Apache module runtime, in the process of HTTP DIGEST authentication, this variable is set to the client sent "Authorization" http Header content (for further authentication operations).

30, $_server[' Php_auth_user ']--when PHP is running in the Apache or IIS (PHP 5 is ISAPI) module mode, and is using the HTTP authentication function, this variable is the user entered user name.

31, $_server[' PHP_AUTH_PW ']--when PHP is running in Apache or IIS (PHP 5 is ISAPI) module mode, and is using the HTTP authentication function, this variable is the user input password.

32, $_server[' Auth_type ']--when PHP is running in the Apache module mode, and is using the HTTP authentication function, this variable is the type of authentication.