-
-
Save azuya/845c77a0a15bedf676e0fe369a49ac64 to your computer and use it in GitHub Desktop.
Manage multiple hostnames (domains, sub-domains) within a single instance of CodeIgniter.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
<?php if (!defined('BASEPATH')) exit('No direct script access allowed'); | |
/* | |
Add the hooks found here to your application/config/hooks.php file. | |
And, don't forget to enable hooks ($config['enable_hooks']) in your application/config/config.php file. | |
*/ | |
$hook['pre_system'][] = array( | |
'class' => 'HostNameRouter', | |
'function' => 'pre_system', | |
'filename' => 'HostNameRouter.php', | |
'filepath' => 'hooks', | |
'params' => array() | |
); | |
$hook['pre_controller'][] = array( | |
'class' => 'HostNameRouter', | |
'function' => 'pre_controller', | |
'filename' => 'HostNameRouter.php', | |
'filepath' => 'hooks', | |
'params' => array() | |
); | |
/* End of file hooks.php */ | |
/* Location: ./application/config/hooks.php */ |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
<?php if (!defined('BASEPATH')) exit('No direct script access allowed'); | |
/* | |
Manage multiple hostnames (domains, sub-domains) within a single instance of CodeIgniter. | |
Example: | |
If you had the following domain/sub-domain style for your site: | |
your-domain.com | |
api.your-domain.com | |
shop.your-domain.com | |
Create the following sub-directories (+ files) in your application/controllers directory: | |
application/controllers/home.php | |
application/controllers/api/product.php | |
application/controllers/api/products.php | |
application/controllers/shop/catalog.php | |
And, in your application/config/hosts.php file: | |
$config['home'] = 'your-domain.com'; | |
$config['api'] = 'api.your-domain.com'; | |
$config['shop'] = 'shop.your-domain.com'; | |
Now if you navigate to your site in a browser, here's what you should get: | |
your-domain.com -> Your site's home page | |
api.your-domain.com/product -> The product end-point of your API | |
api.your-domain.com/products -> The products end-point of your API | |
shop.your-domain.com/catalog -> The catalog page of your shop | |
*/ | |
class HostNameRouter | |
{ | |
protected $hosts; | |
/* | |
Run as a pre-system hook. | |
*/ | |
public function pre_system() | |
{ | |
$this->prepare_hosts(); | |
$this->prevent_direct_controller_group_access(); | |
$this->route_host_to_controller_group(); | |
} | |
/* | |
Run as a pre-controller hook. | |
*/ | |
public function pre_controller() | |
{ | |
$this->prepare_hosts(); | |
$this->restore_uri(); | |
} | |
/* | |
Routes a host name to a specific controller group. | |
*/ | |
protected function route_host_to_controller_group() | |
{ | |
/* | |
Have to use a super global here, because CI's Hooks class re-instantiates | |
this class for every call to it from the config/hooks.php file. | |
*/ | |
$_SERVER['ORIGINAL_REQUEST_URI'] = $_SERVER['REQUEST_URI']; | |
/* | |
Only route the request if there is a host name route | |
for the current host. | |
*/ | |
if ($this->has_controller_group($_SERVER['HTTP_HOST'])) | |
{ | |
$group = $this->get_controller_group($_SERVER['HTTP_HOST']); | |
$_SERVER['REQUEST_URI'] = '/' . $group . $_SERVER['REQUEST_URI']; | |
} | |
} | |
/* | |
Restores the URI-related variables to their originals. | |
*/ | |
protected function restore_uri() | |
{ | |
/* | |
Have to do it this way because the $CI object is not available yet. | |
*/ | |
$this->uri =& load_class('URI', 'core'); | |
$_SERVER['REQUEST_URI'] = $_SERVER['ORIGINAL_REQUEST_URI']; | |
$this->uri->uri_string = ltrim($_SERVER['REQUEST_URI'], '/'); | |
// Remove the query string, if there is one. | |
if (strpos($this->uri->uri_string, '?') !== false) | |
list ($this->uri->uri_string, ) = explode('?', $this->uri->uri_string); | |
$this->uri->segments = array(); | |
if ($this->uri->uri_string !== '') | |
foreach (explode('/', $this->uri->uri_string) as $i => $segment) | |
$this->uri->segments[$i + 1] = $segment; | |
} | |
/* | |
Returns TRUE/FALSE depending upon if the given host has a controller group. | |
*/ | |
protected function has_controller_group($host) | |
{ | |
$group = $this->get_controller_group($host); | |
$controller_subdir = APPPATH . 'controllers/' . $group; | |
return $group !== null && | |
file_exists($controller_subdir) && | |
is_dir($controller_subdir); | |
} | |
/* | |
Returns the host's controller group. | |
*/ | |
protected function get_controller_group($host) | |
{ | |
$host_to_group = array_flip($this->hosts); | |
return isset($host_to_group[$host]) ? $host_to_group[$host] : null; | |
} | |
/* | |
Prevents direct URI access of controller groups. | |
*/ | |
protected function prevent_direct_controller_group_access() | |
{ | |
if (!($group = $this->uri_segment(1))) | |
return; | |
if ($this->group_has_host($group)) | |
{ | |
$protocol = $this->request_protocol(); | |
$host = $this->get_host_by_group($group); | |
$uri = substr($_SERVER['REQUEST_URI'], strlen('/' . $group)); | |
header('Location: ' . $protocol . '://' . $host . $uri, true, 301); | |
exit; | |
} | |
} | |
/* | |
Returns TRUE/FALSE depending upon if the given group has a host. | |
*/ | |
protected function group_has_host($group) | |
{ | |
return $this->get_host_by_group($group) !== null; | |
} | |
/* | |
Returns group's host. | |
*/ | |
protected function get_host_by_group($group) | |
{ | |
return isset($this->hosts[$group]) ? $this->hosts[$group] : null; | |
} | |
/* | |
Returns the URI segment specified by $n | |
*/ | |
protected function uri_segment($n) | |
{ | |
$uri = ltrim($_SERVER['REQUEST_URI'], '/'); | |
$segments = explode('/', $uri); | |
return isset($segments[$n - 1]) ? $segments[$n - 1] : null; | |
} | |
/* | |
Returns 'https' if that was the protocol used by the current request. | |
Returns 'http' otherwise. | |
*/ | |
protected function request_protocol() | |
{ | |
return isset($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) === 'on' ? 'https' : 'http'; | |
} | |
/* | |
Prepares the hosts array. | |
*/ | |
protected function prepare_hosts() | |
{ | |
$this->config =& load_class('Config', 'core'); | |
$this->config->load('hosts', true); | |
$this->hosts = $this->config->item('hosts'); | |
} | |
} | |
/* End of file HostNameRouter.php */ | |
/* Location: ./application/hooks/HostNameRouter.php */ |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); | |
$config = array(); | |
$config['home'] = 'your-domain.com'; | |
$config['api'] = 'api.your-domain.com'; | |
$config['shop'] = 'shop.your-domain.com'; | |
/* | |
Define the SITE constant. | |
*/ | |
foreach ($config as $site => $host) | |
if ($_SERVER['HTTP_HOST'] === $host) | |
{ | |
define('SITE', $site); | |
break; | |
} | |
/* End of file hosts.php */ | |
/* Location: ./application/config/hosts.php */ |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment