为啥/在找到页面时 CodeIgniter 在哪里设置 404 http 状态？

Posted 2023-03-25

【中文标题】为啥/在找到页面时 CodeIgniter 在哪里设置 404 http 状态？

【英文标题】：Why/Where does CodeIgniter set a 404 http status when the page is found?为什么/在找到页面时 CodeIgniter 在哪里设置 404 http 状态？

【发布时间】：2016-08-05 07:16:05

【问题描述】：

我正在使用 CodeIgniter2。我正在使用路由将 url 段路由到控制器和方法。

这似乎有效。我的页面按预期加载，即 url 使用正确的方法从数据库中获取页面信息，然后返回并显示正确的页面。我的routes.php相关代码是：

$route['default_controller'] = "content";
$route['en/(:num)/(:any)'] = "content/en/$1";
$route['de/(:num)/(:any)'] = "content/de/$1";
$route['es/(:num)/(:any)'] = "content/es/$1";
$route['it/(:num)/(:any)'] = "content/it/$1";
$route['ar/(:num)/(:any)'] = "content/ar/$1";
$route['404_override'] = '';

但是，显示的页面不是显示 http 状态 200，而是显示 http 状态 404 ...我不知道为什么。

我怀疑这与 MY_Router.php 文件有关，我必须提供自定义错误页面，但我无法弄清楚发生了什么。

    <?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class MY_Router extends CI_Router 

    var $error_controller = 'error';
    var $error_method_404 = 'error_404';

    function My_Router()
    
        parent::CI_Router();
    

    // this is just the same method as in Router.php, with show_404() replaced by $this->error_404();
    function _validate_request($segments)
    
        // Does the requested controller exist in the root folder?
        if (file_exists(APPPATH.'controllers/'.$segments[0].EXT))
        
            return $segments;
        

        // Is the controller in a sub-folder?
        if (is_dir(APPPATH.'controllers/'.$segments[0]))
               
            // Set the directory and remove it from the segment array
            $this->set_directory($segments[0]);
            $segments = array_slice($segments, 1);

            if (count($segments) > 0)
            
                // Does the requested controller exist in the sub-folder?
                if ( ! file_exists(APPPATH.'controllers/'.$this->fetch_directory().$segments[0].EXT))
                
                    return $this->error_404();
                
            
            else
            
                $this->set_class($this->default_controller);
                $this->set_method('index');

                // Does the default controller exist in the sub-folder?
                if ( ! file_exists(APPPATH.'controllers/'.$this->fetch_directory().$this->default_controller.EXT))
                
                    $this->directory = '';
                    return array();
                
            

            return $segments;
        

        // Can't find the requested controller...
        return $this->error_404();
    

    function error_404()
    
        $this->directory = "";
        $segments = array();
        $segments[] = $this->error_controller;
        $segments[] = $this->error_method_404;
        return $segments;
    

    function fetch_class()
    
        // if method doesn't exist in class, change
        // class to error and method to error_404
        $this->check_method();

        return $this->class;
    

    function check_method()
    
        $ignore_remap = true;

        $class = $this->class;
        if (class_exists($class))
           
            // methods for this class
            $class_methods = array_map('strtolower', get_class_methods($class));

            // ignore controllers using _remap()
            if($ignore_remap && in_array('_remap', $class_methods))
            
                return;
            

            if (! in_array(strtolower($this->method), $class_methods))
            
                $this->directory = "";
                $this->class = $this->error_controller;
                $this->method = $this->error_method_404;
                include(APPPATH.'controllers/'.$this->fetch_directory().$this->error_controller.EXT);
            
        
    

    function show_404()
    
        include(APPPATH.'controllers/'.$this->fetch_directory().$this->error_controller.EXT);
        call_user_func(array($this->error_controller, $this->error_method_404));
    



/* End of file MY_Router.php */
/* Location: ./system/application/libraries/MY_Router.php */

【问题讨论】：

不确定是否相关，但MY_Router的代码属于CI

谢谢Tpojka - 你怎么知道的，你知道我在哪里可以获得升级版吗？可能会工作，可能不会！谢谢

因为语法。几年前，属性是用var 声明的。您可以通过可见性声明省略它（检查here）。第二件事是构造函数。应该是public function __construct() parent::__construct();。 PHP docs。将其更改为开始。

【参考方案1】：

已解决 - 网站中集成的 wordpress 博客正在为所有非 wordpress 页面（即 codeigniter 页面）设置 404 状态

CI的index.php中有如下代码需要注释掉

/*
 *---------------------------------------------------------------
 * WORDPRESS INTEGRATION
 *---------------------------------------------------------------
 * The ci_site_url function helps to avoid collision between WP & CI.
 */

 //header("HTTP/1.0 200 OK");

 define('WP_USE_THEMES', false);
 require_once './blog/wp-blog-header.php';

 add_filter('site_url', 'ci_site_url', 1);

    function ci_site_url()
    
  include(APPPATH.'/config/config.php');
  return $config['base_url'];