conf for codeigniter 3.x

nginx.conf

server {
    listen 80;
    listen [::]:80;
    
    server_name _;
    root /var/www/html/public;
    
    add_header X-Frame-Options "SAMEORIGIN";
    add_header X-XSS-Protection "1; mode=block";
    add_header X-Content-Type-Options "nosniff";
   
    index index.php index.html index.htm;
    
    charset utf-8;

    location / {
         try_files $uri $uri/ /index.php$is_args$args;
    }
    
    location = /favicon.ico { access_log off; log_not_found off; }
    location = /robots.txt  { access_log off; log_not_found off; }

    error_page 404 /index.php;
    
    location ~ \.php$ {
        try_files $uri /index.php =404;
        fastcgi_split_path_info ^(.+\.php)(/.+)\$;
        fastcgi_pass unix:/run/php/php7.2-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;
    }

    location ~ /\.(?!well-known).* {
        deny all;
    }
    
}