PHP Serialize object tree

Question

I have an object tree like the following, which I need to serialize and store on the filesystem. I need the full hierarchy with all class properties and later I will unseria

Answer 1

This is how I would recommend serializing objects:

class Color implements \Serializable
{
    private $Name;
    private $Type;

    public function __construct(string $Name, int $Type)
    {
        $this->Name = $Name;
        $this->Type = $Type;
    }

    public function serialize()
    {
        $Props['Name'] = $this->Name;
        $Props['Type'] = $this->Type;
        return serialize($Props);
    }

    public function unserialize($Data)
    {
        list($this->Name, $this->Type) = unserialize($Data);
    }
}

class Blue extends Color
{
    private $Intensity;

    public function __construct()
    {
        parent::__construct('Blue', 10);
        $this->Intensity = 90;
    }

    public function serialize()
    {
        $Props['parent'] = parent::serialize();
        $Props['Intensity'] = $this->Intensity;
        return serialize($Props);
    }

    public function unserialize($Data)
    {
        $Obj = unserialize($Data);
        parent::unserialize($Obj['parent']);
        $this->Intensity = $Obj['Intensity'];
    }
}

Whichever object you pass in to the serialize() function is the object you will get back (as a string) to unserialize(). If you go your route, then you can implement the serialize()/unserialize() functions inside a trait and get_object_vars() will work properly for private variables.