Device-class-before

Device.php

<?php

class Device
{
  private $userAgent;
  private $kind;
  private $os;
  private $devicesDatabase;
  
  public function __construct($userAgent, $devicesDatabase)
  {
    $this->userAgent = $userAgent;
    $this->devicesDatabase = $devicesDatabase;
  }
  
  public function os()
  {
    // some code to retrieve OS from $this->devicesDatabase
  }
  
  public function kind()
  {
    // some code to retrieve the kind of the Device from $this->devicesDatabase
  }
}