Codeigniter 3 server configuration for Nginx & Apache

Web Server Site Configuration

Recommended Apache Configuration

Use the following configuration in Apache's httpd.conf file or within a virtual host configuration. Note that you should set DocumentRoot and ServerName fit to your environment:

<VirtualHost *:80>
    DocumentRoot "/var/www/codeignitor"
    ServerName www.example.com

    # Other directives here
</VirtualHost>

To enable pretty URL, add .htaccess in the webroot directory:

RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php/$1 [L]

Recommended Nginx Configuration

To use Nginx, you should install PHP as an FPM SAPI. You may use the following Nginx configuration, replacing root value with the actual path for Codeignitor porject and server_name with the actual hostname to serve.

server {
        server_name domain.tld;

        root /var/www/codeignitor;
        index index.html index.php;

        # set expiration of assets to MAX for caching
        #location ~* \.(ico|css|js|gif|jpe?g|png)(\?[0-9]+)?$ {
        #        expires max;
        #        log_not_found off;
        #}

        location / {
                # Check if a file or directory index file exists, else route it to index.php.
                try_files $uri $uri/ /index.php;
        }

        location ~* \.php$ {
                fastcgi_pass 127.0.0.1:9000;
		fastcgi_pass unix:/var/run/php5-fpm.sock;
                include fastcgi.conf;
		#fastcgi_param CI_ENV 'production';
        }
	
	# Deny for accessing .htaccess files for Nginx
	location ~ /\.ht {
            deny all;
        }
	
	# Deny for accessing codes
        location ~ ^/(application|system|tests)/ {
            return 403;
        }
}

Sub Directory Site Application

Codeiniter would guess your environment URI to implement pretty URL, if your Codeiniter application is under a sub folder of webroot, you just need to set the web server try file to current directory.

The following example would use /_projects/codeigniter as subdirectory path.

Application BaseUrl

From the orignal Codeigniter config file application/config/config.php:

$config['base_url'] = '';
$config['index_page'] = 'index.php';

We could set subdirectory path to base_url and disable index_page:

$config['base_url'] = '/_projects/codeigniter';
$config['index_page'] = '';

After setting, you would able to consistently bind URL when you use Url generator:

$this->load->helper('url');
echo site_url('controller/action'); 	// `/_projects/codeigniter/controller/action`
echo base_url("controller/action");	// `/_projects/codeigniter/controller/action`	
redirect('controller/action');		// Go to `/_projects/codeigniter/controller/action`

Apache Configuration

It's easy to set pretty URL for Codeiniter in Apache where ever the application directory is, add .htaccess in the webroot directory:

RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php/$1 [L]

Nginx Configuration

Customize the location path to current Codeiniter application directory:

location /_projects/codeigniter/ {

	try_files $uri $uri/ /_projects/codeigniter/index.php;
}

yidas/codeiginter-server-config.md