fastcgi_split_path_info
The fastcgi_split_path_info directive is used to split the URI into two parts, which is particularly useful for passing specific path information to FastCGI applications.
Description
The fastcgi_split_path_info directive allows you to specify a regular expression that matches a part of the request URI and separates it into two components: the "script" part and the "path info" part. This is essential for FastCGI applications, where you may want to route certain URI requests to specific scripts while also passing residual path information for processing. The directive defines how the URI is parsed and makes it possible for the underlying application to manage requests effectively.
When this directive is set, the server processes the request URI according to the specified pattern, capturing the script and the path info into the environment variables SCRIPT_NAME and PATH_INFO, respectively. This functionality allows developers to create Clean URLs while still allowing their scripts to operate correctly with expected inputs. The regex provided as an argument should be carefully constructed to adequately capture what is required, as improper patterns can lead to unexpected behavior or misrouting of requests.
The directive can be used inside http, server, and location contexts, making it very flexible for use across different levels of your NGINX configuration. It is important to ensure that the regular expression provided adheres to the syntax used in NGINX and does not conflict with existing routes in your server.
Config Example
location ~ \.php$ {
fastcgi_split_path_info ^(.+\.php)(/.+)$;
fastcgi_pass 127.0.0.1:9000;
include fastcgi_params;
}Ensure that the regular expression correctly matches the URI structure expected by your application; otherwise, you may lose path information.
If multiple fastcgi_split_path_info directives are defined in different contexts, NGINX may use the rule defined in the most specific context, potentially leading to confusion.