UserManager.php
private function loadFromFile()
    {
        if (is_file($this->_file)) {
            $this->_params = require($this->_file);
        } else {
            $this->_params = ['users' => []];
        }
    }
private function loadFromFile()
    {
        if (is_file($this->_file)) {
            $this->_params = require($this->_file);
        } else {
            $this->_params = ['users' => []];
        }
    }
private function loadFromFile ( ) { if ( is_file ( $ this -> _file ) ) { $ this -> _params = require ( $ this -> _file ) ; } else { $ this -> _params = [ 'users' => [ ] ] ; } }
load user data from config file
load user data from config file