Object Oriented PHP, Class cannot be found

Question

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 class looks like,

<?php
namespace app\parse;

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

And my index.php file looks like,

<?php

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

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

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

Are you using some kind of autoloader in your project? If not, you need to include the file containing the MyParser class explicitly, because use does not do that for you. Have a look at these questions: How does the keyword use work in php and can I import classes with it and Use vs include as an import statement in php. — mrodo
– mrodo, Commented Feb 28, 2020 at 1:55

toh19 · Accepted Answer · 2020-02-28 02:03:14Z

3

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();
?>

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

answered Feb 28, 2020 at 2:03

toh19

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