In-depth analysis of PHP server variable $_SERVER_PHP tutorial-PHP Tutorial-php.cn

In-depth analysis of PHP server variable $_SERVER_PHP tutorial

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Release： 2016-07-15 13:31:06

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For a newbie1. $_SESSION['PHP_SELF'] -- PHP server variable $_SERVER gets the file name of the currently executing script

2. $_SERVER ['SERVER_PROTOCOL'] -- The name and version of the communication protocol when requesting the page. For example, "HTTP/1.0".

3. $_SERVER['REQUEST_TIME'] -- The timestamp when the request started. Valid since PHP 5.1.0. The effect is the same as the time function.

4. $_SERVER['argv'] -- parameters passed to the script. I tried it, and the get method can get $_SERVER['argv'][0]; the post method cannot assign a value to it.

5. $_SERVER['SERVER_NAME'] -- Returns the current host name.

6. $_SERVER['SERVER_SOFTWARE'] -- The string identifying the server, given in the header information when responding to the request. Such as Microsoft-IIS/6.0

7, $_SERVER['REQUEST_METHOD'] -- the request method when accessing the page. For example: "GET", "HEAD", "POST", "PUT".

8. $_SERVER['QUERY_STRING'] -- The string of the PHP server variable $_SERVER query (the content after the first question mark ? in the URL).

9. $_SERVER['DOCUMENT_ROOT'] -- The document root directory where the currently running script is located. Defined in the server configuration file. For example, E:server

10, $_SERVER['HTTP_ACCEPT'] -- The content of the Accept: header information of the current request of PHP server variable $_SERVER.

11. $_SERVER['HTTP_ACCEPT_CHARSET'] -- The content of the Accept-Charset: header information of the current request. For example: "iso-8859-1,*,utf-8".

12. $_SERVER['HTTP_ACCEPT_ENCODING'] -- The content of the Accept-Encoding: header of the current request. For example: "gzip".

13. $_SERVER['HTTP_ACCEPT_LANGUAGE'] -- The content of the Accept-Language: header of the current request. For example: "en".

14. $_SERVER['HTTP_CONNECTION'] -- The content of the Connection: header information of the current request. For example: "Keep-Alive".

15. $_SERVER['HTTP_HOST'] -- The content of the Host: header information currently requested by the PHP server variable $_SERVER.

16. $_SERVER['HTTP_REFERER'] -- URL address of the previous page linked to the current page.

17. $_SERVER['HTTP_USER_AGENT'] -- Returns the browser information used by the user. This information can also be obtained using get_browser().

18, $_SERVER['HTTPS'] -- If accessed through https, it is set to a non-empty value, otherwise it returns off.

19, $_SERVER['REMOTE_ADDR' ] -- The IP address of the user who is browsing the current page.

20. $_SERVER['REMOTE_HOST'] -- The host name of the user who is browsing the current page. Reverse domain name resolution is based on the user's REMOTE_ADDR. For example, the local test returns 127.0.0.1

21, $_SERVER['REMOTE_PORT'] -- the port used by the user to connect to the server. I failed the test on this machine, I don’t know why.

22. $_SERVER['SCRIPT_FILENAME'] -- The absolute path name of the currently executing script. For example, return E:serverindex.php

23, $_SERVER['SERVER_ADMIN'] -- The value of this PHP server variable $_SERVER specifies the SERVER_ADMIN parameter in the Apache server configuration file. If the script is running on a virtual host, this value is the value of that virtual host

24, $_SERVER['SERVER_PORT'] -- The port used by the server. Default is "80". If using SSL secure connection, this value is the HTTP port set by the user.

25. $_SERVER['SERVER_SIGNATURE'] -- A string containing the server version and virtual host name.

26. $_SERVER['PATH_TRANSLATED'] -- The base path of the file system (not the document root directory) where the current script is located. This is the result after the server has been imaged from a virtual to real path. Apache 2 users can define PATH_INFO using AcceptPathInfo On in httpd.conf.

27. $_SERVER['SCRIPT_NAME'] -- Contains the path of the current script. This PHP server variable $_SERVER is very useful when the page needs to point to itself. __FILE__ contains the absolute path and file name of the current file (such as an include file).

28. $_SERVER['REQUEST_URI'] -- The URI required to access this page. For example, "/index.html".

29. $_SERVER['PHP_AUTH_DIGEST'] -- When running as an Apache module, during the HTTP Digest authentication process, this variable is set to the "Authorization" HTTP header content sent by the client (in order to further authentication operations).

30. $_SERVER['PHP_AUTH_USER']--When PHP is running in Apache or IIS (PHP 5 is ISAPI) module mode and the HTTP authentication function is being used, this variable is the user name entered by the user. .

31. $_SERVER['PHP_AUTH_PW'] -- When PHP is running in Apache or IIS (PHP 5 is ISAPI) module mode and the HTTP authentication function is being used, this variable is the password entered by the user.

32. $_SERVER['AUTH_TYPE']--When PHP is running in Apache module mode and is using the HTTP authentication function, the PHP server variable $_SERVER is the authentication type.