Related introduction about Apache rewrite

1. Enable rewrite

sudo a2enmod rewrite

2. Disable rewrite

sudo a2dismod rewrite

3. Server environment variables

The environment variables provided by Apache to the rewirte module are roughly divided into 5 types.
Part 1: HTTP headers Partial parameters
Parameter name: HTTP_USER_AGENT
Sample reference value: Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.9.0.8) Gecko/2009032609 Firefox/3.0.8
Explanation: Equivalent to Server parameters in PHP: $_SERVER["HTTP_USER_AGENT"]
Parameter name: HTTP_REFERER
Sample reference value: http://www.test.cn/test.php
Description: Equivalent to the server parameter in PHP: _SERVER["HTTP_REFERER"]
Parameter name: HTTP_COOKIE
Sample reference value: ZDEDebuggerPresent=php,phtml,php3
Description: Quite Server parameters in PHP: $_SERVER["HTTP_COOKIE"]
Parameter name: HTTP_FORWARDED
Sample reference value: If a proxy server is used, it will be the IP address of the proxy server, not the local one It is easy to test the value in the environment.
Description: Equivalent to the server parameter in PHP: $_SERVER["HTTP_FORWARDED"]
Parameter name: HTTP_HOST
Sample reference value: www .test.com
Description: Equivalent to the server parameter in PHP: $_SERVER["HTTP_HOST"]
Parameter name: HTTP_PROXY_CONNECTION
Sample reference value: Network connection proxy Information. The same as the HTTP_FORWARDED parameter. It is not easy to test the value locally with the environment.
Note: PHP does not seem to provide such a server information value. If so, it may be equivalent to: $_SERVER["HTTP_PROXY_CONNECTION"]
Parameter name: HTTP_ACCEPT
Sample reference value: text/html,application/xhtml xml,application/xml;q=0.9,*/*;q=0.8
Description: Equivalent to Server parameters in PHP: $_SERVER["HTTP_ACCEPT"]
Part 2: server internals Partial parameters
Parameter name: DOCUMENT_ROOT
Sample reference value: C:/webRoot/t
Explanation: Equivalent to the server parameter in PHP: $_SERVER["DOCUMENT_ROOT"]
Parameter name: SERVER_ADMIN
Sample Example reference value: youemailaddress@gmail.com
Description: Equivalent to the server parameter in PHP: $_SERVER["SERVER_ADMIN"]
Parameter name: SERVER_NAME
Sample reference value: www.test.com
Description: Equivalent to the server parameters in PHP: $_SERVER["SERVER_NAME"]
Parameter name: SERVER_ADDR
Sample reference value: 127.0.0.1
Description: Equivalent to server parameters in PHP: $_SERVER["SERVER_ADDR"]
Parameter name: SERVER_PORT
Sample reference value: 80
Description: Equivalent to PHP Server parameter: $_SERVER["SERVER_PORT"]
Parameter name: SERVER_PROTOCOL
Sample reference value: HTTP/1.1
Description: Equivalent to the server parameter in PHP: $_SERVER ["SERVER_PROTOCOL"]
Parameter name: SERVER_SOFTWARE
Sample reference value: Apache/2.2.11 (Win32) PHP/5.2.9-1
Description: Equivalent to PHP Server parameters: $_SERVER["SERVER_SOFTWARE"]
Part 3: connection & request Partial parameters
Parameter name: REMOTE_ADDR
Sample reference value: 127.0.0.1 The IP address of the user who is browsing the current page.
Description: Equivalent to the server parameter in PHP: $_SERVER["REMOTE_ADDR"]
Parameter name: REMOTE_HOST
Sample reference value: 127.0.0.1 The user who is browsing the current page CPU name. Reverse domain name resolution is based on the user's REMOTE_ADDR
Description: Equivalent to the server parameter in PHP: $_SERVER["REMOTE_HOST"]
Parameter name: REMOTE_PORT
Sample reference value: 2574 (changing value) The port used by users to connect to the server
Description: Equivalent to the server parameter in PHP: $_SERVER["REMOTE_PORT"]
Parameter name: REMOTE_USER
Sample reference value: empty
Explanation: PHP does not seem to provide the relevant $_SERVER value.
Parameter name: REMOTE_IDENT
Sample reference value: empty
Explanation: PHP It seems that the relevant $_SERVER value was not provided.
Parameter name: REQUEST_METHOD
Sample reference value: GET
Description: Equivalent to the server parameter in PHP: $_SERVER["REQUEST_METHOD"]
Parameter name: SCRIPT_FILENAME
Sample reference value: C:/webRoot/t/share77.html
Description: Equivalent to the server parameter in PHP: $_SERVER["SCRIPT_FILENAME"]
Parameter name: PATH_INFO
Sample reference value: empty
Description: Equivalent to the server parameter in PHP: $_REQUEST["PATH_INFO"]
Parameter name: QUERY_STRING
Sample Reference value: a=b&c=d&e=f
Description: Equivalent to the server parameter in PHP: $_SERVER["QUERY_STRING"]
Parameter name: AUTH_TYPE
Sample reference value : When PHP is running in Apache module mode and is using the HTTP authentication function, this is the authentication type
Description: Equivalent to the server parameters in PHP: $_SERVER["AUTH_TYPE"]
Fourth Part: date and time Part parameters
Parameter name: TIME_YEAR
Sample reference value: 2009
Description: The server obtains the current year value
Parameter name: TIME_MON
Sample reference value: 04
Description: The server obtains the current month value
Parameter name: TIME_DAY
Sample Reference value: 22
Description: The server obtains the current day value
Parameter name: TIME_HOUR
Sample reference value: 16
Description: The server obtains the hour of the current time
Parameter name: TIME_MIN
Sample reference value: 26
Description: The server obtains the minutes of the current time
Parameter name: TIME_SEC
Sample reference Value: 34
Description: The server obtains the seconds of the current time
Parameter name: TIME_WDAY
Sample reference value: 3
Description: The server obtains the day of the week, starting from Sunday -Saturday, numbers from 0-6
Parameter name: TIME
Sample reference value: 20090422162634
Description: The server obtains the current time in the format: year, month, day, hour, minute, and second
Part 5: specials Some parameters
Parameter name: API_VERSION
Sample reference value: 20051115:21
Description: API version information of apache.
Parameter name: THE_REQUEST
Sample reference value: GET /share77.html HTTP/1.1
Description: The request value sent by the browser to the server. No Including other header information.
Parameter name: REQUEST_URI
Sample reference value: /share77.html
Description: Resource information requested by the browser.
Parameter name: REQUEST_FILENAME
Sample reference value: C:/webRoot/t/share77.html
Description: The physical address of the requested resource on the disk.
Parameter name: IS_SUBREQ
Sample reference value: false
Description: If it is a sub-request, it is displayed as true, otherwise it is false.
Parameter name: HTTPS
Sample reference Value: off
Description: If the connection uses SSL/TLS mode, the value is on, otherwise the value is off. This parameter is safer, even when the mod_ssl module is not loaded.

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