dsms21398
2016-11-06 23:32
浏览 52
已采纳

这个.htaccess代码是什么意思? 它似乎重定向某些href调用。

I'm wondering what the following .htaccess code does for this site I've acquired. It seems to redirect href calls that look like internal likes, for examples /listings/30 doesn't exist as a path but the page will load if called.

DirectoryIndex index.php
RewriteBase /
RewriteEngine on
RewriteCond $1 !^(index\.php|images|css|js|robots\.txt|favicon\.ico)
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php?/$1 [L]

If it helps, here is the index.php:

<?php
set_include_path(getcwd() . '/application/views');
date_default_timezone_set('America/Los_Angeles');

if(!function_exists("_")) {
    function _($string) {
        return $string;
    }
}


/*
 *---------------------------------------------------------------
 * 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':
            ini_set('display_errors', 1);
            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
 *---------------------------------------------------------------
 *
 * 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.
 *
 */
    $system_path = 'system';

/*
 *---------------------------------------------------------------
 * 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_folder = 'application';

/*
 * --------------------------------------------------------------------
 * 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 */
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1条回答 默认 最新

  • duanchu3376 2016-11-06 23:46
    已采纳

    RewriteCond $1 !^(index.php|images|css|js|robots.txt|favicon.ico)

    If the URL doesn't have:

    index.php, images, css, js, robots.txt, favicon.ico,

    RewriteCond %{REQUEST_FILENAME} !-f

    If it's not a file on the system

    RewriteCond %{REQUEST_FILENAME} !-d

    If it's not a directory,

    RewriteRule ^(.*)$ index.php?/$1 [L]

    it will send the request through to the index.php

    So if you had:

    http://example.com/listings/30
    

    It looks like it would get rewritten as:

    http://example.com/index.php?/listings/30
    

    The reason for this, is to get index.php to parse and do some logic based on what was sent. /listings/30 in this case.

    Your index.php looks like it's just loading the application built with codeigniter. It doesn't really have the logic in there to handle this.

     

    Here's an example of a website I found built with codeigniter like this:

    http://www.princetonproperty.com/listings/30

    If you rewrite their link to:

    http://www.princetonproperty.com/index.php?/listings/30

    It still works.

    That's what's happening when the request reaches Apache. It gets sent to the index.php as a query string.

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