Laravel or Lumen application inside sub directory nginx configuration with routing.

lumen.conf

server {

	listen 80;
	server_name dev ipv6only=on;

	root /usr/share/nginx/html;
	index index.php index.html index.htm;

	location ~ \.php$ {

		try_files $uri =404;
		fastcgi_split_path_info ^(.+\.php)(/.+)$;
		fastcgi_pass unix:/var/run/php/php7.0-fpm.sock;
		fastcgi_index index.php;
		fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
		include fastcgi_params;
	}

	location /api {

		try_files /api/$uri /api/$uri/ /api/index.php?q=$uri&$args;
	}


	location /phpmyadmin {

                auth_basic "Restricted Content";
		auth_basic_user_file /etc/nginx/.htpasswd;
		root /usr/share/nginx/html;
		index index.php index.html index.htm;
	}
 
	error_page 500 502 503 504 /50x.html;
	location = /50x.html {

		root /usr/share/nginx/html;
	}
  
	location ~ /\.ht {

		deny all;
	}
}