PHP autoloader duplicate path

i want to learn autoloader in PHP but i loader duplicate my path to my files and its not working.

<?php


function myAutoLoader($class){
    $directories = [
        __DIR__ .  "/classes/account/",
        __DIR__ .  "/classes/database/",
    ];
    $extension = ".php";

    foreach ($directories as $directory){
        $fullPath = $directory . str_replace('\', '/', $class) . $extension;
        var_dump($fullPath);
        if(file_exists($fullPath)) {
            require_once $fullPath;
            return true;
        }
    }
    return false;
}

spl_autoload_register('myAutoLoader');

and my Classes, were i want get path:

<?php

namespace controllers;


use classesaccountRegisterAccount;

require_once __DIR__ . "/../includes/autoloader.php";

class RegisterController extends RegisterAccount

but path its duplicate:
string(94) “C:xampphtdocsreservationSystemincludes/classes/account/classes/account/RegisterAccount.php” string(95)

my directory structure is :
project/
├── classes/
│ ├── account/
|
___RegisterAccount.php
│ └── database/
│ └── Connect.php
└── includes/
└── autoloader.php

I searched for answers on youtube and sof but, did not find a solution.