面向对象的 PHP，找不到类 [英] Object Oriented PHP, Class cannot be found

问题描述

我有一个小任务来创建一个面向对象的 PHP 后端应用程序，该应用程序将由 angular 7 前端使用.这是一个非常小的项目，只有几个类，我的 php 项目文件夹结构看起来像，

I have a small task to create a Object Oriented PHP backend application which is to be used by an angular 7 frontend. This is a very small project with only few classes and my php project folder structure looks like,

 wamp/www/MyProject
  - MyObject.php
  - MyParser.php
  - index.php

MyParser 类看起来像，

MyParser class looks like,

<?php
namespace app\parse;

class MyParser
{
    public static function parse_object(){
        echo "in parse_object";
        // --- parse logic---
   }
}

我的 index.php 文件看起来像，

And my index.php file looks like,

<?php

//---- some request processing here ---
use app\parse\MParser;
MyParser::parse_object();
?>

当我尝试使用 http://localhost/MyProject/index.php 从浏览器访问 index.php 时我明白了，

When I try to access index.php from the browser with http://localhost/MyProject/index.php I get,

Fatal error: Uncaught Error: Class 'app\parse\MyParser' not found in C:\wamp\www\MyProject\index.php on line 9
( ! ) Error: Class 'app\parse\MyParser' not found in C:\wamp\www\MyProject\index.php on line 9

如果您能找到我在这里遗漏的东西，我们将不胜感激.

It would be highly appreciated if you can find out what I am missing here.

推荐答案

为了能够使用 MyParser 静态方法，您需要显式地 require MyParser.php:

In order to be able to use MyParser static method, you need to explicitly require MyParser.php:

<?php

//---- some request processing here ---
use app\parse\MyParser;
require("MyParser.php");
MyParser::parse_object();
?>

如果你想在没有要求的情况下使用它，你必须使用 自动加载器.

If you want to be able to use it without the require, you have to use an autoloader.

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