Blog built-in variables

Name	Version	Description (variable list from file ngx_http_variables)
$args	1.0.8	The parameters in the request;
$binary _remote_addr	1.0.8	Binary representation of a remote address
$body _bytes_sent	1.0.8	Number of bytes of message body sent
$content _length	1.0.8	The "content-length" in the HTTP request message;
$content _type	1.0.8	"Content-type" in the request information;
$document _root	1.0.8	Sets the value for the root path of the current request;
$document _uri	1.0.8	Same as $uri;
$host	1.0.8	"Host" in the request message, if there is no host row in the request, is equal to the set server name;
$hostname	1.0.8
$http _cookie	1.0.8	Cookie Information
$http _post	1.0.8
$http _referer	1.0.8	Reference address
$http _user_agent	1.0.8	Client Agent Information
$http _via	1.0.8	The IP address of the last access server. Http://www.cnblogs.com/deng02/archive/2009/02/11/1387911.html
$http _x_forwarded_for	1.0.8	Equivalent to the network access path. Http://www.cnblogs.com/craig/archive/2008/11/18/1335809.html
$is _args	1.0.8
$limit _rate	1.0.8	Restrictions on the connection rate;
$nginx _version	1.0.8
$pid	1.0.8
$query _string	1.0.8	Same as $args;
$realpath _root	1.0.8
$remote _addr	1.0.8	Client address;
$remote _port	1.0.8	Client port number;
$remote _user	1.0.8	Client user name, authentication;
$request	1.0.8	User request
$request _body	1.0.8
$request _body_file	1.0.8	The name of the local file to be sent back
$request _completion	1.0.8
$request _filename	1.0.8	The file path name of the current request
$request _method	1.0.8	The requested method, such as "GET", "POST" and so on;
$request _uri	1.0.8	The URI of the request, with parameters;
$scheme	1.0.8	The protocol used, such as HTTP or HTTPS, such as rewrite^ (. +) $ $scheme://example.com$1redirect;
$sent _http_cache_control	1.0.8
$sent _http_connection	1.0.8
$sent _http_content_length	1.0.8
$sent _http_content_type	1.0.8
$sent _http_keep_alive	1.0.8
$sent _http_last_modified	1.0.8
$sent _http_location	1.0.8
$sent _http_transfer_encoding	1.0.8
$server _addr	1.0.8	Server address, if the server address is not indicated with listen, use this variable to initiate a system call to obtain the address (resulting in resource wastage);
$server _name	1.0.8	The name of the server on which the request arrived;
$server _port	1.0.8	The server port number on which the request arrived;
$server _protocol	1.0.8	The requested protocol version, "http/1.0" or "http/1.1";
$uri	1.0.8	The requested URI may be different from the original value, such as a redirect.

Name	Version	Description (variable list from file ngx_http_variables)
$args	1.0.8	The parameters in the request;
$binary _remote_addr	1.0.8	Binary representation of a remote address
$body _bytes_sent	1.0.8	Number of bytes of message body sent
$content _length	1.0.8	The "content-length" in the HTTP request message;
$content _type	1.0.8	"Content-type" in the request information;
$document _root	1.0.8	Sets the value for the root path of the current request;
$document _uri	1.0.8	Same as $uri;
$host	1.0.8	"Host" in the request message, if there is no host row in the request, is equal to the set server name;
$hostname	1.0.8
$http _cookie	1.0.8	Cookie Information
$http _post	1.0.8
$http _referer	1.0.8	Reference address
$http _user_agent	1.0.8	Client Agent Information
$http _via	1.0.8	The IP address of the last access server. Http://www.cnblogs.com/deng02/archive/2009/02/11/1387911.html
$http _x_forwarded_for	1.0.8	Equivalent to the network access path. Http://www.cnblogs.com/craig/archive/2008/11/18/1335809.html
$is _args	1.0.8
$limit _rate	1.0.8	Restrictions on the connection rate;
$nginx _version	1.0.8
$pid	1.0.8
$query _string	1.0.8	Same as $args;
$realpath _root	1.0.8
$remote _addr	1.0.8	Client address;
$remote _port	1.0.8	Client port number;
$remote _user	1.0.8	Client user name, authentication;
$request	1.0.8	User request
$request _body	1.0.8
$request _body_file	1.0.8	The name of the local file to be sent back
$request _completion	1.0.8
$request _filename	1.0.8	The file path name of the current request
$request _method	1.0.8	The requested method, such as "GET", "POST" and so on;
$request _uri	1.0.8	The URI of the request, with parameters;
$scheme	1.0.8	The protocol used, such as HTTP or HTTPS, such as rewrite^ (. +) $ $scheme://example.com$1redirect;
$sent _http_cache_control	1.0.8
$sent _http_connection	1.0.8
$sent _http_content_length	1.0.8
$sent _http_content_type	1.0.8
$sent _http_keep_alive	1.0.8
$sent _http_last_modified	1.0.8
$sent _http_location	1.0.8
$sent _http_transfer_encoding	1.0.8
$server _addr	1.0.8	Server address, if the server address is not indicated with listen, use this variable to initiate a system call to obtain the address (resulting in resource wastage);
$server _name	1.0.8	The name of the server on which the request arrived;
$server _port	1.0.8	The server port number on which the request arrived;
$server _protocol	1.0.8	The requested protocol version, "http/1.0" or "http/1.1";
$uri	1.0.8	The requested URI may be different from the original value, such as a redirect.

Name	Version	Description (variable list from file ngx_http_variables)
$args	1.0.8	The parameters in the request;
$binary _remote_addr	1.0.8	Binary representation of a remote address
$body _bytes_sent	1.0.8	Number of bytes of message body sent
$content _length	1.0.8	The "content-length" in the HTTP request message;
$content _type	1.0.8	"Content-type" in the request information;
$document _root	1.0.8	Sets the value for the root path of the current request;
$document _uri	1.0.8	Same as $uri;
$host	1.0.8	"Host" in the request message, if there is no host row in the request, is equal to the set server name;
$hostname	1.0.8
$http _cookie	1.0.8	Cookie Information
$http _post	1.0.8
$http _referer	1.0.8	Reference address
$http _user_agent	1.0.8	Client Agent Information
$http _via	1.0.8	The IP address of the last access server. Http://www.cnblogs.com/deng02/archive/2009/02/11/1387911.html
$http _x_forwarded_for	1.0.8	Equivalent to the network access path. Http://www.cnblogs.com/craig/archive/2008/11/18/1335809.html
$is _args	1.0.8
$limit _rate	1.0.8	Restrictions on the connection rate;
$nginx _version	1.0.8
$pid	1.0.8
$query _string	1.0.8	Same as $args;
$realpath _root	1.0.8
$remote _addr	1.0.8	Client address;
$remote _port	1.0.8	Client port number;
$remote _user	1.0.8	Client user name, authentication;
$request	1.0.8	User request
$request _body	1.0.8
$request _body_file	1.0.8	The name of the local file to be sent back
$request _completion	1.0.8
$request _filename	1.0.8	The file path name of the current request
$request _method	1.0.8	The requested method, such as "GET", "POST" and so on;
$request _uri	1.0.8	The URI of the request, with parameters;
$scheme	1.0.8	The protocol used, such as HTTP or HTTPS, such as rewrite^ (. +) $ $scheme://example.com$1redirect;
$sent _http_cache_control	1.0.8
$sent _http_connection	1.0.8
$sent _http_content_length	1.0.8
$sent _http_content_type	1.0.8
$sent _http_keep_alive	1.0.8
$sent _http_last_modified	1.0.8
$sent _http_location	1.0.8
$sent _http_transfer_encoding	1.0.8
$server _addr	1.0.8	Server address, if the server address is not indicated with listen, use this variable to initiate a system call to obtain the address (resulting in resource wastage);
$server _name	1.0.8	The name of the server on which the request arrived;
$server _port	1.0.8	The server port number on which the request arrived;
$server _protocol	1.0.8	The requested protocol version, "http/1.0" or "http/1.1";
$uri	1.0.8	The requested URI may be different from the original value, such as a redirect.

name Version description (variable list from file ngx_http_variables)
$args The parameters in the 1.0.8 request;
$binary _remote_addr 1.0.8 Binary representation of remote address
number of bytes of message body sent $body _bytes_sent 1.0.8
$content the "Content-length" in the _length 1.0.8 HTTP request message;
$content the "Content-type" in the _type 1.0.8 request information;
$document _root 1.0.8 Sets the value for the root path of the current request;
$document _uri 1.0.8 is the same as $uri;
$host 1.0.8 "host" in the request message, if there is no host row in the request, it is equal to the set server name;
$hostname 1.0.8
$http _cookie 1.0.8 Cookie Information
$http _post 1.0.8
$http _referer 1.0.8 Reference address
$http _user_agent 1.0.8 Client Agent Information
$http _via 1.0.8 The IP address of the last access server. Http://www.cnblogs.com/deng02/archive/2009/02/11/1387911.html
$http _x_forwarded_for 1.0.8 corresponds to a network access path. Http://www.cnblogs.com/craig/archive/2008/11/18/1335809.html
$is _args 1.0.8
$limit _rate 1.0.8 limits on the connection rate;
$nginx _version 1.0.8
$pid 1.0.8
$query _string 1.0.8 is the same as $args;
$realpath _root 1.0.8
$remote _addr 1.0.8 client address;
$remote _port 1.0.8 client port number;
$remote _user 1.0.8 Client user name, authentication;
$request 1.0.8 User requests
$request _body 1.0.8
$request _body_file 1.0.8 The local file name of the backend
$request _completion 1.0.8
$request _filename 1.0.8 The file path name of the current request
$request _method 1.0.8 request method, such as "GET", "POST" and so on;
$request The URI of the _uri 1.0.8 request, with parameters;
$scheme 1.0.8 protocols used, such as HTTP or HTTPS, such as rewrite^ (. +) $ $scheme://example.com$1redirect;
$sent _http_cache_control 1.0.8
$sent _http_connection 1.0.8
$sent _http_content_length 1.0.8
$sent _http_content_type 1.0.8
$sent _http_keep_alive 1.0.8
$sent _http_last_modified 1.0.8
$sent _http_location 1.0.8
$sent _http_transfer_encoding 1.0.8
$server _addr 1.0.8 server address, if you do not specify a server address with listen, use this variable to initiate a system call to obtain an address (resulting in a waste of resources);
$server The name of the server to which the _name 1.0.8 request arrived;
$server _port 1.0.8 The server port number to which the request arrived;
$server _protocol 1.0.8 The requested protocol version, "http/1.0" or "http/1.1";
The URI of the $uri 1.0.8 request may be different from the original value, such as a redirect

The above introduces the blog built-in variables, including the aspects of the content, I hope that the PHP tutorial interested in a friend helpful.

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