Routeo con path_info/nginx 101: front-controller

index.php

<?php

//para el request /mira/un/salmón?color=verde
$segmentos = split("/", $_SERVER['PATH_INFO']);
//['mira', 'un', 'salmón']

// o algo por el estilo...
$args = array_slice($segmentos, 2, count($segmentos)-2);

$controller = new $segmentos[0]; //new Mira
$controller->$segmentos[1]($args); // Mira::un('salmón');

class Mira {
	public function un($tipo) {
		echo "Mira, un {$tipo} de color {$_GET['color']}";
	}
}

nginx.conf

http {

	#...
	
	upstream backend {
		server unix:/private/var/tmp/php.sock;
	}

}

vhost.conf

server {
	listen 80;
	server_name undominio.tld;
	
	root /path/to/files;
	
	location / {
		try_files $uri $uri/ /index.php?$query_string;		
		index index.php;
	}
	
	location ~ ^.+\.php {
		fastcgi_split_path_info ^(.+\.php)(.*)$;
		fastcgi_pass   backend;
		fastcgi_index  index.php;
		fastcgi_param  SCRIPT_FILENAME $document_root/$fastcgi_script_name;
		include fastcgi_params;
		fastcgi_param	PATH_INFO		$fastcgi_path_info;
		fastcgi_param	PATH_TRANSLATED	$document_root/$fastcgi_path_info;
		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 	DOCUMENT_ROOT   $document_root;
		fastcgi_param 	SCRIPT_NAME		$fastcgi_script_name;
		fastcgi_intercept_errors        off;
		fastcgi_ignore_client_abort     off;
		fastcgi_connect_timeout 60;
		fastcgi_send_timeout 180;
		fastcgi_read_timeout 180;
		fastcgi_buffer_size 128k;
		fastcgi_buffers 4 256k;
		fastcgi_busy_buffers_size 256k;
		fastcgi_temp_file_write_size 256k;
	}
}