index.php

<?php
/*
 * ---------------------------------------------------------------------------
 * DOMAIN PREFIX/SUFFIX DETERMINER
 * ---------------------------------------------------------------------------
 *
 * This function is used to pull out either the prefix or suffix of the
 * current url. You should not need to modify this, use this variable below
 * to switch between the two methods: $domains['environment']
 *
 */
if ( ! function_exists('domains_determine_uri'))
{
	function domains_determine_uri($domain_environment = 'prefix')
	{
		$http_host = (isset($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : FALSE);
		$http_split = ($http_host ? explode('.', $http_host) : FALSE);
		switch(strtolower($domain_environment))
		{
			case 'prefix':
				$domain_uri = $http_split[0];
				break;
			case 'suffix':
				$domain_uri = end($http_split);
				break;
			default:
				exit('The domain environment has not been set correctly, please use either prefix or suffix.');	
		}
		return (isset($domain_uri) ? $domain_uri : FALSE);
	}
}


/*
 * ---------------------------------------------------------------------------
 * SYSTEM FOLDER NAME
 * ---------------------------------------------------------------------------
 *
 * This variable must contain the name of your "system" folder.
 * Include the path if the folder is not in the same  directory
 * as this file.
 *
 *
 * ---------------------------------------------------------------------------
 * APPLICATION FOLDER NAME
 * ---------------------------------------------------------------------------
 *
 * If you want this front controller to use a different "application"
 * folder then the default one you can set its name here. The folder
 * can also be renamed or relocated anywhere on your server.  If
 * you do, use a full server path. For more info please see the user guide:
 * http://codeigniter.com/user_guide/general/managing_apps.html
 *
 * NO TRAILING SLASH!
 *
 *
 * ---------------------------------------------------------------------------
 * APPLICATION ENVIRONMENT
 * ---------------------------------------------------------------------------
 *
 * You can load different configurations depending on your
 * current environment. Setting the environment also influences
 * things like logging and error reporting.
 *
 * This can be set to anything, but default usage is:
 *
 *     development
 *     staging
 *     production
 *
 *
 * ---------------------------------------------------------------------------
 * MULTI-DOMAIN
 * ---------------------------------------------------------------------------
 *
 * The following combines the system and application folder definitions and
 * the application environments. Please read each of the above sections 
 * and follow their individual guidelines. 
 *
 * $domains['environment'] = 'prefix';
 * The above enables you to use domains such as:
 *  - dev.site.com
 *  - stage.site.com
 *
 * $domains['environment'] = 'suffix';
 * The above enables you to use domains such as:
 *  - site.dev
 *  - site.stage
 *
 * Please remember that this is only half of the setup, you'll need to read
 * up on modifying your hosts file and if using apache the vhosts file too.
 *
 * For further help with this please visit:
 * 
 * http://jedkirby.com/blog/2012/11/codeigniter-multiple-development-environments
 *
 *
 */
$domains['environment'] = 'prefix';
switch( domains_determine_uri( $domains['environment'] ) )
{
	case 'dev':
	case 'local':
		define('ENVIRONMENT', 'development');
			$system_path = 'system';
			$application_folder = 'application';
        break;
	case 'stage':
	case 'staging':
		define('ENVIRONMENT', 'staging');
			$system_path = 'system';
			$application_folder = 'application';
        break;		
	default:
		define('ENVIRONMENT', 'production');
			$system_path = 'system';
			$application_folder = 'application';
}


/*
 *---------------------------------------------------------------
 * ERROR REPORTING
 *---------------------------------------------------------------
 *
 * Different environments will require different levels of error reporting.
 * By default development will show errors but staging and live will hide them.
 *
 */
if (defined('ENVIRONMENT'))
{
	switch (ENVIRONMENT)
	{
		case 'development':
			error_reporting(E_ALL);
			break;
		case 'staging':
		case 'production':
			error_reporting(0);
			break;
		default:
			exit('The application environment is not set correctly.');
	}
}


/*
 * --------------------------------------------------------------------
 * DEFAULT CONTROLLER
 * --------------------------------------------------------------------
 *
 * Normally you will set your default controller in the routes.php file.
 * You can, however, force a custom routing by hard-coding a
 * specific controller class/function here.  For most applications, you
 * WILL NOT set your routing here, but it's an option for those
 * special instances where you might want to override the standard
 * routing in a specific front controller that shares a common CI installation.
 *
 * IMPORTANT:  If you set the routing here, NO OTHER controller will be
 * callable. In essence, this preference limits your application to ONE
 * specific controller.  Leave the function name blank if you need
 * to call functions dynamically via the URI.
 *
 * Un-comment the $routing array below to use this feature
 *
 */
	// The directory name, relative to the "controllers" folder.  Leave blank
	// if your controller is not in a sub-folder within the "controllers" folder
	// $routing['directory'] = '';

	// The controller class file name.  Example:  Mycontroller
	// $routing['controller'] = '';

	// The controller function you wish to be called.
	// $routing['function']	= '';


/*
 * -------------------------------------------------------------------
 *  CUSTOM CONFIG VALUES
 * -------------------------------------------------------------------
 *
 * The $assign_to_config array below will be passed dynamically to the
 * config class when initialized. This allows you to set custom config
 * items or override any default config values found in the config.php file.
 * This can be handy as it permits you to share one application between
 * multiple front controller files, with each file containing different
 * config values.
 *
 * Un-comment the $assign_to_config array below to use this feature
 *
 */
	// $assign_to_config['name_of_config_item'] = 'value of config item';



// --------------------------------------------------------------------
// END OF USER CONFIGURABLE SETTINGS.  DO NOT EDIT BELOW THIS LINE
// --------------------------------------------------------------------

/*
 * ---------------------------------------------------------------
 *  Resolve the system path for increased reliability
 * ---------------------------------------------------------------
 */

	// Set the current directory correctly for CLI requests
	if (defined('STDIN'))
	{
		chdir(dirname(__FILE__));
	}

	if (realpath($system_path) !== FALSE)
	{
		$system_path = realpath($system_path).'/';
	}

	// ensure there's a trailing slash
	$system_path = rtrim($system_path, '/').'/';

	// Is the system path correct?
	if ( ! is_dir($system_path))
	{
		exit("Your system folder path does not appear to be set correctly. Please open the following file and correct this: ".pathinfo(__FILE__, PATHINFO_BASENAME));
	}

/*
 * -------------------------------------------------------------------
 *  Now that we know the path, set the main path constants
 * -------------------------------------------------------------------
 */
	// The name of THIS file
	define('SELF', pathinfo(__FILE__, PATHINFO_BASENAME));

	// The PHP file extension
	// this global constant is deprecated.
	define('EXT', '.php');

	// Path to the system folder
	define('BASEPATH', str_replace("\\", "/", $system_path));

	// Path to the front controller (this file)
	define('FCPATH', str_replace(SELF, '', __FILE__));

	// Name of the "system folder"
	define('SYSDIR', trim(strrchr(trim(BASEPATH, '/'), '/'), '/'));


	// The path to the "application" folder
	if (is_dir($application_folder))
	{
		define('APPPATH', $application_folder.'/');
	}
	else
	{
		if ( ! is_dir(BASEPATH.$application_folder.'/'))
		{
			exit("Your application folder path does not appear to be set correctly. Please open the following file and correct this: ".SELF);
		}

		define('APPPATH', BASEPATH.$application_folder.'/');
	}

/*
 * --------------------------------------------------------------------
 * LOAD THE BOOTSTRAP FILE
 * --------------------------------------------------------------------
 *
 * And away we go...
 *
 */
require_once BASEPATH.'core/CodeIgniter.php';

/* End of file index.php */
/* Location: ./index.php */