Multiple subdomains on a single Bancha installation

Readme.md

Bancha multidomain plugin

How to install:

(soon)

core core Bancha_Config.php

<?php

class Bancha_Config extends CI_Config
{

    // Replace the site_url() function with the function below

    function site_url($uri = '', $prepend_language = TRUE)
	{
		$base = $this->slash_item('base_url');

		if (is_string($prepend_language))
		{
			$base.= $prepend_language . '/';
		} else {
			if ($prepend_language && $this->prepend_language)
			{
				$base.= $this->prepend_language . '/';
			}
		}

		if ($uri == '')
		{
			return $base.$this->item('index_page');
		}

		if ($this->item('enable_query_strings') == FALSE)
		{
			$suffix = ($this->item('url_suffix') == FALSE) ? '' : $this->item('url_suffix');
			return domain_prepare( $base.$this->slash_item('index_page').$this->_uri_string($uri).$suffix );
		}
		else
		{
			return $base.$this->item('index_page').'?'.$this->_uri_string($uri);
		}
	}

}

core > core > Bancha_Config.php

<?php

class Bancha_Config extends CI_Config
{

    // Replace the site_url() function with the function below

    function site_url($uri = '', $prepend_language = TRUE)
	{
		$base = $this->slash_item('base_url');

		if (is_string($prepend_language))
		{
			$base.= $prepend_language . '/';
		} else {
			if ($prepend_language && $this->prepend_language)
			{
				$base.= $this->prepend_language . '/';
			}
		}

		if ($uri == '')
		{
			return $base.$this->item('index_page');
		}

		if ($this->item('enable_query_strings') == FALSE)
		{
			$suffix = ($this->item('url_suffix') == FALSE) ? '' : $this->item('url_suffix');
			return domain_prepare( $base.$this->slash_item('index_page').$this->_uri_string($uri).$suffix );
		}
		else
		{
			return $base.$this->item('index_page').'?'.$this->_uri_string($uri);
		}
	}

}

index.php

<?php

// 1. -----------------------------------------------------------

define('ENVIRONMENT', 'development');

//Include the file just below the environment declaration
require_once('multidomain.php');


// 2. -----------------------------------------------------------


/*
 *---------------------------------------------------------------
 * ADMIN PUBLIC PATH
 *---------------------------------------------------------------
 *
 */
	$admin_path = 'admin/';

	//If is the admin, we redirect the user the the original domain
	if (DEDICATED_SUBDOMAIN && $_SERVER['SERVER_NAME'] . '/' != DOMAIN_MAIN && strpos($_SERVER['REQUEST_URI'], '/admin') !== FALSE) {
		header('Location: ' . DOMAIN_MAIN . $admin_path);
		exit;
	}

multidomain.php

<?php

//The hostname
$hostname = 'mywebsite.com';

//The main subdomain (you can leave it blank)
$main_domain = '';

//The subdomains
$_SERVER['STANDALONE_DOMAINS'] = array(
	'blog', 'about', 'works', 'shop'
);

/* --------------------------------------------------------------- */

// 1. Constants declaration
define('DOMAIN_MAIN', 'http://' . $main_domain . $hostname . '/');
define('DOMAIN_HOSTNAME', $hostname . '/');

// 2. URL Helper (called on the core/core/Core_Config.php)
function domain_prepare($url = '') {

	// 2.1 trim the domain/subdomain
	foreach ($_SERVER['STANDALONE_DOMAINS'] as $third_level) {

		if (strpos($url, DOMAIN_HOSTNAME . $third_level) !== FALSE) {

			// 2.1.1 something/blog > blog.something
			return str_replace('http://' . DOMAIN_HOSTNAME . $third_level, 'http://' . $third_level . '.' . rtrim(DOMAIN_HOSTNAME, '/'), $url);
		}
	}

	// 2.2 normalize url to the main domain
	return str_replace('http://' . $_SERVER['SERVER_NAME'] . '/', DOMAIN_MAIN, $url);
}

// 3. Fake requests
$dedicated_subdomain = FALSE;
foreach ($_SERVER['STANDALONE_DOMAINS'] as $third_level) {
	if (strpos($_SERVER['HTTP_HOST'], $third_level.'.') !== FALSE) {
		$_SERVER['REQUEST_URI'] = '/' . $third_level . $_SERVER['REQUEST_URI'];
		$dedicated_subdomain = TRUE;
		break;
	}
}
define ('DEDICATED_SUBDOMAIN', $dedicated_subdomain);