index.php

<?php
//Force UTF-8 charset for all outgoing outputs
header("Content-Type: text/html; charset=UTF-8", true);

//make sure the PHP scripts are reloaded every time
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");   // Date in the past
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");  // always modified
header("Cache-Control: no-store, no-cache, must-revalidate");   // HTTP/1.1
header("Cache-Control: post-check=0, pre-check=0", false);  // HTTP/1.0
header("Pragma: no-cache");

/*
 * ---------------------------------------------------------------
 * 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
 *     testing
 *     production
 *
 * NOTE: If you change these, also change the error_reporting() code below
 *
 */
define('ENVIRONMENT', 'development');
/*
 * ---------------------------------------------------------------
 * ERROR REPORTING
 * ---------------------------------------------------------------
 *
 * Different environments will require different levels of error reporting.
 * By default development will show errors but testing and live will hide them.
 */

if (defined('ENVIRONMENT')) {
    switch (ENVIRONMENT) {
        case 'development':
            error_reporting(E_ALL);
            break;

        case 'testing':
        case 'production':
            error_reporting(0);
            break;

        default:
            exit('The application environment is not set correctly.');
    }
}

/*
 * ---------------------------------------------------------------
 * SYSTEM FOLDER NAME
 * ---------------------------------------------------------------
 */
$system_path = 'system';

/*
 * ---------------------------------------------------------------
 * APPLICATION FOLDER NAME
 * ---------------------------------------------------------------
 */
$application_folder = 'application';

/*
 * ---------------------------------------------------------------
 *  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 . '/');
}


require_once BASEPATH . 'core/CodeIgniter.php';