Abstract Class User in Php

Account.php

<?php
  declare(strict_types=1);

  $path = dirname(__DIR__, 1);
  $path .= '/models/UserModel.php';
  require_once $path;

  class Account extends User {
    
    private $userId;
    private $userLevel="";
    private $username="";
    private $password="";
    private $action=array();
    private $statusAccount="";

    public function setUserLevel($levels) {
      $this->userLevel = $levels;
    }

    public function getUserLevel() {
      return $this->userLevel;
    }

    public function setUserId($id) {
      $this->userId = $genUserId();
    }
    
    public function setUserId($id) {
      $this->userId = $genUserId();
    }
    
    public function setUsername($usernames) {
      $this->username = $usernames;
    }

    public function getUsername() {
      return $this->username;
    }

    public function setPassword($passwords) {
      $this->password = $passwords;
    }

    public function getPassword() {
      return $this->password;
    }

    public function listAction($actions) {
      $this->action = $actions;
    }

    public function getAction() {
      return $actions;
    }

    public function checkParentClass($fileClass) {
      return get_parent_class($fileClass);
    }

    public function checkSubclass($childClass, $parentClass) {
      return is_subclass_of($childClass, $parentClass);
    }
  }
?>

AccountServices.php

class AccountServices {
  
  private $account;

  public function activateAccount($accountDatabase) {
     if($this->account-> == $accountDatabase->getId) {
       print("okey");
     } else {
       print("not okey");
     }
  }
}

UserModels.php

<?php
 declare(strict_types=1);

  abstract class User {

      public $arrayUserId = array();

      abstract public function setUserLevel($level);
      abstract public function getUserLevel();

      public function printUserLevel() {
        print($this->getUserLevel()."\n");
      }

      public function genUserId() {
        $prefix ="A";
        $suffix;
        $maxValue = 1;
        $userId = 0;

        for ($index=1; $index <= $maxValue; $index++) {
          $suffix = $index;
          $userId = $prefix.sprintf("%04s",$suffix);
          $this->arrayUserId[$index] = $userId;
        }
        return $this->arrayUserId;
      }
  }
?>