win Nginx(PHP/fastcgi)的PATH_INFO配置

PATHINFO是一个CGI 1.1的标准，经常用来做为传参载体，在Apache中, 当不加配置的时候, 对于PHP脚本, AcceptPathInfo是默认接受的，而对于Nginx下, 是不支持PATHINFO 的, 也就是需要设置才能使用PATHINFO模式.
我们可以使用PATH_INFO来代替Rewrite来实现伪静态页面, 很多PHP框架也使用PATHINFO模式来作为路由载体

Apache 默认设置PATHINFO原理分析

#对于请求http://www.z1988.com/tools/index.php/login/index
#Apache都接受, 都会认为是对index.php的访问, 并会设置PATH_INFO为'/login/index'
print_r($_SERVER["PATH_INFO"]);//login/index
nginx 模拟PATH_INFO
Nginx是通过对文件名的扩展名匹配,来决定是否要交给php cgi服务器去解释的.在nginx.conf

[code]
location ~ \.php(.*)$ {
try_files $uri =404;
fastcgi_pass 127.0.0.1:20071;
fastcgi_index index.php;
include fastcgi_params;
include pathinfo;
}
[/code]

fastcgi_params
[code]
fastcgi_param QUERY_STRING $query_string;
fastcgi_param REQUEST_METHOD $request_method;
fastcgi_param CONTENT_TYPE $content_type;
fastcgi_param CONTENT_LENGTH $content_length;

fastcgi_param SCRIPT_NAME $fastcgi_script_name;
fastcgi_param REQUEST_URI $request_uri;
fastcgi_param DOCUMENT_URI $document_uri;
fastcgi_param DOCUMENT_ROOT $document_root;
fastcgi_param SERVER_PROTOCOL $server_protocol;
fastcgi_param REQUEST_SCHEME $scheme;
fastcgi_param HTTPS $https if_not_empty;

fastcgi_param GATEWAY_INTERFACE CGI/1.1;
fastcgi_param SERVER_SOFTWARE nginx/$nginx_version;

fastcgi_param REMOTE_ADDR $remote_addr;
fastcgi_param REMOTE_PORT $remote_port;
fastcgi_param SERVER_ADDR $server_addr;
fastcgi_param SERVER_PORT $server_port;
fastcgi_param SERVER_NAME $server_name;

# PHP only, required if PHP was built with --enable-force-cgi-redirect
fastcgi_param REDIRECT_STATUS 200;
[/code]

pathinfo
[code]
set $real_script_name $fastcgi_script_name;
if ($fastcgi_script_name ~ "^(.+?\.php)(/.+)$") {
set $real_script_name $1;
set $path_info $2;
}
fastcgi_param SCRIPT_FILENAME $document_root$real_script_name;
fastcgi_param SCRIPT_NAME $real_script_name;
fastcgi_param PATH_INFO $path_info;
[/code]