error.nginx

error_page 404 /error/404;
error_page 422 /error/422;
error_page 500 /error/500;
error_page 502 /error/502;
error_page 503 /error/503;

location ~ ^/error/(\d+)$ {
    fastcgi_pass unix:/$php_socket;
    fastcgi_param SCRIPT_FILENAME $document_root/php/error/index.php;
    fastcgi_param ERROR_CODE $1;
    include fastcgi_params;
    internal;
}