tSingleton

MMO\core\classes · 1 symbol · generated 5 Oct 2026

trait

tSingleton

Trait to implement the singleton pattern: exactly one instance of the class exists per request, lazily created on first access and stored in the application's Configuration container, keyed by class name. The instance is built (and configured) from whatever config was Configuration::load-ed for this class name -- see e.g. static::DefaultConfig() on classes extending aModule.

trait MMO\core\classes\tSingleton

Namespace: MMO\core\classes

class MyService {use tSingleton; public string $greeting = 'hello';} MyService::Shared() === MyService::Shared(); // true: always the same instance

Index

	Instantiate($config) static	(Re)create the shared instance immediately, configured with $config merged into the class's existing config.
	IsShared() static
	Shared() static	Get the shared instance, creating (and configuring) it on first call.
	Unshare($serialize) static	Remove the shared instance, so the next `Shared()` call creates a fresh one.

Methods4

Instantiate($config)

statictSingleton.php:61

(Re)create the shared instance immediately, configured with $config merged into the class's existing config.

static function Instantiate(array $config = []): static

Unlike a plain [`Shared()`](https://mcp.mmoframework.fr/documentation/mmo.core/php/classes/tSingleton.md#tsingleton-shared) call (which lazily builds the instance from whatever config was already loaded), this lets you supply/override config right before the instance is built.

$config = []	array	config values merged in before the instance is constructed
returns	static	the newly (re)created shared instance

MyService::Instantiate(['greeting' => 'yo'])->greeting; // 'yo'

IsShared()

statictSingleton.php:49

static function IsShared(): bool

returns bool true if the shared instance has already been created (a call to Shared() would not need to construct a new one)

MyService::IsShared(); // false until the first MyService::Shared() call

Shared()

statictSingleton.php:22

Get the shared instance, creating (and configuring) it on first call.

static function Shared(): static

returns

static

MyService::Shared()->greeting; // 'hello'

Unshare($serialize)

statictSingleton.php:35

Remove the shared instance, so the next Shared() call creates a fresh one.

static function Unshare(bool $serialize = true): bool

See: serialize) and kept as the class's config, so the next instance created picks up where this one left off; if false, the instance is simply discarded and the next one starts from the class's original config

$serialize = true	bool	if true (the default) and an instance currently exists, it is serialized first (via
returns	bool	true if an instance actually existed and was removed

MyService::Unshare(); // true if MyService::Shared() had already been called; the next call rebuilds it