Are there any potential drawbacks to using a class-specific Registry instead of a global Singleton Registry in PHP?

Using a class-specific Registry instead of a global Singleton Registry can lead to increased complexity and maintenance overhead, as each class will have its own Registry instance to manage. However, this approach can also provide better encapsulation and prevent potential conflicts between different classes accessing the same global Registry. It is important to weigh the trade-offs and consider the specific requirements of the project before deciding on the best approach. 

class Registry {
    private static $instances = [];

    public static function getInstance($className) {
        if (!isset(self::$instances[$className])) {
            self::$instances[$className] = new $className();
        }
        return self::$instances[$className];
    }
}

class MyClass {
    private $registry;

    public function __construct() {
        $this->registry = Registry::getInstance(__CLASS__);
    }

    // Class methods using $this->registry
}

Keywords

class-specific Registry global Singleton Registry drawbacks PHP error types

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