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首页 > 解决方案 > 注意：尝试访问第 15 行 H:\xampp\htdocs\ecommerce\app\libraries\Core.php 中 null 类型值的数组偏移量

php - 注意：尝试访问第 15 行 H:\xampp\htdocs\ecommerce\app\libraries\Core.php 中 null 类型值的数组偏移量

问题描述

 <?php
  /*
   * App Core Class
   * Creates URL & loads core controller
   * URL FORMAT - /controller/method/params
   */
 class Core {
    protected $currentController = 'Pages';
    protected $currentMethod = 'index';
    protected $params = [];



public function __construct(){
      //print_r($this->getUrl());
      $url = $this->getUrl();
      // Look in controllers for first value
      if(file_exists('../app/controllers/' . ucwords($url[0]). '.php')){
        // If exists, set as controller
        $this->currentController = ucwords($url[0]);
        // Unset 0 Index
        unset($url[0]);
      }
      // Require the controller
      require_once '../app/controllers/'. $this->currentController . '.php';
      // Instantiate controller class
      $this->currentController = new $this->currentController;
      // Check for second part of url
      if(isset($url[1])){
        // Check to see if method exists in controller
        if(method_exists($this->currentController, $url[1])){
          $this->currentMethod = $url[1];
          // Unset 1 index
          unset($url[1]);
        }
      }
  

// Get params
      $this->params = $url ? array_values($url) : [];
      // Call a callback with array of params
      call_user_func_array([$this->currentController, $this->currentMethod], $this->params);
    }



public function getUrl(){
      if(isset($_GET['url'])){
        $url = rtrim($_GET['url'], '/');
        $url = filter_var($url, FILTER_SANITIZE_URL);
        $url = explode('/', $url);
        return $url;
      }
    }
  }

上面的代码包含类似这样的错误提示： Trying to access array offset on value of type of null in H:\xampp\htdocs\ecommerce\app\libraries\Core.php 在第 18 行

需要一次'../app/controllers/'。$this->currentController 。'.php';

这是行。当我使用 domain.com 进入网站时显示此错误，当我输入 domian.com/post 时它没有问题

标签： phpnotice

解决方案

我也遇到了这个问题。

if(file_exists('../app/controllers/' . ucwords($url[0]). '.php')){
      // If exists, set as controller
    $this->currentController = ucwords($url[0]);
    // Unset 0 Index
    unset($url[0]);
  }`

在这个地方，也许你必须先添加!empty($url[0])&&
，file_exists这肯定会集中你的问题

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