类设计模式-最佳实践

男人和女人！

我的问题是我真的不知道什么是最好的设计方法，所以我定义了两个类，第一个是：

class color
{
  private $id = NULL; 
  private $name = '';
  private $rgb = NULL; 
  private $cmy = NULL;
  private $wavelength = NULL; 
  private $frequency = NULL; 
public function __construct($name, $rgb, $cmy, $wavelenght, $frequency)
{
    setName($name);
    setRGB($rgb);
    setCMY($cmy);
    setWavelength($wavelength);
    setFrequency($frequency);
}
public function __destruct()
{
}
public function setName($name)
{
    $this->name=$name;
}
public function setRGB($rgb)
{
    $this->rgb=$rgb;
}
public function setCMY($cmy)
{
    $this->cmy=$cmy;
}
public function setWavelength($wavelength)
{
    $this->wavelength=$wavelength;
}
public function setFrequency($frequency)
{
    $this->frequency=$frequency;
}
public function getId()
{
    return $this->id;
}
public function getName()
{
    return $this->name;
}
public function getRGB()
{
    return $this->rgb;
}
public function getCMY()
{
    return $this->cmy;
}
public function getWavelength()
{
    return $this->wavelength;
}
public function getFrequency()
{
    return $this->frequency;
}
public function toJSON()
{
    return "{'id':'".$this->id."', 'name':'".$this->name."', 'rgb':'".$this->rgb."', 'cmy':'".$this->cmy."', 'wavelength':'".$this->wavelength."', 'frequency':'".$this->frequency."'}";
}
public function toCSV()
{
    return $this->id . ", " . $this->name . ", " . $this->rgb . ", " . $this->cmy . ", " . $this->wavelength . ", " . $this->frequency;
}
public function toHTML()
{
    return "<p>ID: " . $this->id . "</p><p>Name: " . $this->name . "</p><p>RGB: " . $this->rgb . "</p><p>CMY: " . $this->cmy . "</p><p>Wavelength: " . $this->wavelength . "</p><p>Frequency: " . $this->frequency . "</p>";
}

2'nd类看起来像

class CRUD_color
{
    public function create_color($parameters)
    {
       $color=new color();
       $color->setName($parameter['name']);
       $color->setRGB($parameter['rgb']);
       $color->setCMY($parameter['cmy']);
       $color->setWavelength($parameter['wavelength']);
       $color->setFrequency($parameter['frequency']);
       $entitymanager->persist($color);
       $entitymanager->flush();
    }
    public function request_color($parameters)
    {
       $color=$entitymanager->find($parameter['id']);
       echo $color->toJSON($parameter['name']);
    }
    public function update_color($parameters)
    {
       $color=$entitymanager->find($parameter['id']);
       $color->setName($parameter['name']);
       $color->setRGB($parameter['rgb']);
       $color->setCMY($parameter['cmy']);
       $color->setWavelength($parameter['wavelength']);
       $color->setFrequency($parameter['frequency']);
       $entitymanager->persist($color);
       $entitymanager->flush();
    }
    public function delete_color($parameters)
    {
       $color=$entitymanager->delete($parameter['id']);
    }
}

现在我的问题是，如果只有一个类的颜色并在第一个类中包含第二个类的函数更好吗？还是让他们分开？

为什么一个比另一个好，反之亦然？设计模式对我来说很重要，为什么要选择一个而不是另一个呢。。

如果我们有create_color函数，我们像new color（）一样实例化类本身，会有问题吗？？？？