$ _ Server Parameters

1. $ _ SERVER ['php _ SELF '] -- get the file name of the script being executed
2. $ _ SERVER ['server _ Protocol'] -- name and version of the communication PROTOCOL when requesting the page.
3. $ _ SERVER ['request _ time'] -- the timestamp at the start of the REQUEST. PHP 5.1.0 or above
4. $ _ SERVER ['argv'] -- parameters passed to the script.
5. $ _ SERVER ['server _ name'] -- returns the current host NAME.
6. $ _ SERVER ['server _ soft'] -- the string of the SERVER identifier, which is provided in the header information in the Response Request.
7. $ _ SERVER ['request _ method'] -- the request method used to access the page.
8. $ _ SERVER ['query _ string'] -- query string (the first question mark in the URL? ).
9. $ _ SERVER ['document _ root'] -- the ROOT directory of the DOCUMENT where the script is currently running. Defined in the server configuration file.
10. $ _ SERVER ['HTTP _ ACCEPT '] -- Accept of the current request: header information.
11. $ _ SERVER ['HTTP _ ACCEPT_CHARSET '] -- Accept-Charset of the current request: content of the header information.
12. $ _ SERVER ['HTTP _ ACCEPT_ENCODING '] -- Accept-Encoding of the current request: content of the header information.
13. $ _ SERVER ['HTTP _ ACCEPT_LANGUAGE '] -- Accept-Language of the current request: content of the header information.
14. $ _ SERVER ['HTTP _ connection'] -- CONNECTION of the current request: content of the header information
15. $ _ SERVER ['HTTP _ host'] -- HOST of the current request: header information.
16. $ _ SERVER ['HTTP _ referer'] -- link to the URL of the previous page of the current page.
17. $ _ SERVER ['HTTP _ USER_AGENT '] -- return the browser information used by the user. You can also use get_browser () to obtain this information. 18. $ _ SERVER ['https'] -- determine access through HTTPS
19. $ _ SERVER ['remote _ ADDR '] -- browsing the IP address of the user on the current page.
20. $ _ SERVER ['remote _ host'] -- the HOST name of the user on the current page is being viewed. Reverse Domain name resolution is based on the user's REMOTE_ADDR. 21. $ _ SERVER ['remote _ port'] -- the PORT used by the user to connect to the SERVER.
22. $ _ SERVER ['script _ filename'] -- absolute path name of the currently executed SCRIPT
23. $ _ SERVER ['server _ admin'] -- This value specifies the SERVER_ADMIN parameter in the Apache SERVER configuration file. If the script runs on a VM, the value is the value of that VM.
24. $ _ SERVER ['server _ port'] -- the PORT used by the SERVER. The default value is "80 ". If SSL secure connection is used, 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 basic PATH of the file system where the current script is located (not the root directory of the document. This is the result of a virtual image to a real path on 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, including the FILE ).
28. $ _ SERVER ['request _ URI '] -- URI required to access this page.
29. $ _ SERVER ['php _ AUTH_DIGEST '] -- during HTTP Digest authentication when running as an Apache module, this variable is set to the "Authorization" HTTP header content sent by the client (For further authentication ).
30. $ _ SERVER ['php _ AUTH_USER '] -- when PHP runs in the Apache or IIS (PHP 5 is an ISAPI) module and is using the HTTP authentication function, this variable is the user name entered by the user.
31. $ _ SERVER ['php _ AUTH_PW '] -- when PHP runs in the Apache or IIS (PHP 5 is an ISAPI) module and is using the HTTP authentication function, this variable is the password entered by the user. 32. $ _ SERVER ['auth _ type'] -- when PHP runs in the Apache module mode and uses the HTTP authentication function, this variable is the authentication TYPE.