object persistence in php

Question

I am fairly new to web programming, I have mainly used java to create desktop applications in the past.

I\'m trying to figure out how to create persistent objects in

Answer 1

Stop using singleton and use dependency injection.

Best way is to use DataMapper (http://www.martinfowler.com/eaaCatalog/dataMapper.html) and attach it to an object by means of dynamic properties. Let the data mapper handle persistence.

$CS = new CookieStorage();
$SS = new SessionStorage();
$FS = new FileStorage('config/object.db');

$DM = new ObjectDataMapper($FS);

$O  = new Object($DM);

$Object->DynamicProperty = 1;

Now DynamicProperty will automatically persist and will automatically be loaded from file object.db. And the class definition:

class Object
{
    public function __construct(MapperInstance $Storage = NULL)
    {
        $this->setMapper($Storage?: new ObjectDataMapper(new FileStorage('config/object.db')));
    }

    public function __get($name)
    {
        $this->_Mapper->getProperty($name);
    }

    public function __isset($name)
    {
        $this->_Mapper->isProperty($name);
    }

    public function __set($name, $value)
    {
        $this->Mapper->setProperty($name, $value);
    }
}