Codeigniter in subdirectory on Nginx 404

Question

I'm trying to setup Codeigniter in a subdirectory of my domain. Currently I only get an 404 from Codeigniter on the index page. As soon as a want to go to example.com/api/welcome/index I get a 404 from nginx.

My nginx.conf:

location /api/ { alias /var/www/api/; try_files $uri $uri/ /api/index.php =404; location ~ \.php$ { try_files $uri /index.php =404; fastcgi_split_path_info ^(.+\.php)(/.+)$; fastcgi_index index.php; fastcgi_pass backend; include fastcgi_params; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; } } 

and Codeigniter.conf:

$config['base_url'] = 'https:/example.com/api/'; $config['uri_protocol'] = 'REQUEST_URI'; $config['index_page'] = ''; 

Answer 1

Got it working, the solution was to use $request_filename; instead of $document_root$fastcgi_script_name;

location /api/ { alias /var/www/api/; try_files $uri $uri/ /api/index.php; location ~ \.php$ { fastcgi_split_path_info ^(.+\.php)(/.+)$; fastcgi_index index.php; fastcgi_pass backend; include /etc/nginx/fastcgi_params; fastcgi_param SCRIPT_FILENAME $request_filename; } } 

Answer 2

This has worked for me (nginx 1.18)

location ^~ /api { root /var/www/api; index index.php; try_files $uri $uri/ /api/index.php; location ~ \.php$ { try_files $uri /index.php =404; fastcgi_pass unix:/run/php/php7.1-fpm.sock; fastcgi_index index.php; fastcgi_buffers 16 16k; fastcgi_buffer_size 32k; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; fastcgi_read_timeout 600; include fastcgi_params; } }