Registry or Singleton pattern in PHP?

Question

I am working with PHP classes and objects now. In this question the names of fields and methods are made up just so you get an idea of what I am talking about.

It

Answer 1

You can implement lazy loading to only load the objects you really need:

class Registry
{
    private static $database = null;

    private static function connectDatabase($key)
    {
        [... do connection stuff ...]
    }

    public static function getDatabase($key)
    {
        if (Registry::$database == null)
        {
            Registry::connectDatabase($key);
        }
        return Registry::$database;
    }
}

The code to register the database connection parameters is left as exercise to the reader.