PHP $ _ Server

In the past, I was curious that the website could obtain the IP address of the user accessing the current page. Now I know that the website uses the $ _ server parameter $ _ server ['remote _ ADDR '] in $ _ server.

You can input parameters to the $ _ server variable to extract valuable information related to the server and script.

$ _ Server ['php _ Self '] # The file name of the script being executed Document Root Related.
$ _ Server ['argv'] # Parameters passed to the script.
$ _ Server ['argc '] # Include passedProgramNumber of command line parameters (if running in command line mode ).
$ _ Server ['Gateway _ interface'] # The CGI Standard version. For example, "Cgi/1.1" .
$ _ Server ['server _ name'] # Name of the server host where the script is currently running.
$ _ Server ['server _ soft'] # The string identified by the server, which is in the header of the Response Request.
$ _ Server ['server _ Protocol'] # The name and version of the communication protocol on the request page. For example, & Quot; HTTP/1.0 & quot" .
$ _ Server ['request _ method'] # AccessPage request method. For example:"Get","Head","Post","Put".
$ _ Server ['query _ string'] # Query (Query) .
$ _ Server ['document _ root'] # The document root directory where the script is currently running. Defined in the server configuration file.
$ _ Server ['HTTP _ Accept '] # Current requested Accept: Header content.
$ _ Server ['HTTP _ accept_charset'] # Current requested Accept-charset: Header content. For example: "Iso-8859-1, *, UTF-8" .
$ _ Server ['HTTP _ accept_encoding '] # Current requested Accept-encoding: Header content. For example: "Gzip" .
$ _ Server ['HTTP _ accept_language '] # Current requested Accept-language: Header content. For example: "EN" .
$ _ Server ['HTTP _ connection'] # Current requested Connection: Header content. For example: "Keep-alive" .
$ _ Server ['HTTP _ host'] # Current requested Host: Header content.
$ _ Server ['HTTP _ referer'] # Link to the previous page of the current pageURLAddress.
$ _ Server ['HTTP _ user_agent '] # Current requested User_agent: Header content.
$ _ Server ['https']- If HTTPS Access , Is set to a non-empty value. (On) Otherwise, return Off
$ _ Server ['remote _ ADDR '] # Browsing the user'sIPAddress.
$ _ Server ['remote _ host'] # The host name of the user browsing the current page.
$ _ Server ['remote _ port'] # The port used by the user to connect to the server.
$ _ Server ['script _ filename'] # The absolute path name of the currently executed script.
$ _ Server ['server _ admin'] # Administrator Information
$ _ Server ['server _ port'] # Port used by the server
$ _ Server ['server _ signature '] # A string containing the server version and virtual host name.
$ _ Server ['path _ translated '] # The basic path of the file system (not the document root directory) where the current script is located.
$ _ Server ['script _ name'] # The path that contains the current script. This is useful when the page needs to point to itself.
$ _ Server ['request _ URI '] # The Uri . For example, "/Index.html" .
$ _ Server ['php _ auth_user '] # When PHP Run in Apache Module, and is using HTTP Authentication function. This variable is the user name entered by the user.
$ _ Server ['php _ auth_pw '] # When PHP Run in Apache Module, and is using HTTP Authentication function. This variable is the password entered by the user.
$ _ Server ['auth _ type'] # When PHP Run in Apache Module, and is using HTTP Authentication function. This variable is the authentication type.