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Singleton ​

Raxos\Foundation\Util\Singleton is a static registry that keeps at most one instance per class name. It backs the global singleton() function and Option::none().

See the Singleton concept page for a guided introduction.

Signature ​

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namespace Raxos\Foundation\Util;

final class Singleton

Methods ​

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public static function get(string $class): object

Returns the existing instance, or creates one with a plain constructor call and stores it.

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public static function getOrNull(string $class): ?object

Returns the existing instance, or null if none was created yet.

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public static function has(string $class): bool

Returns true if an instance for the class already exists.

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public static function make(string $class): object

Forces creation of a new instance with a plain constructor call and stores it.

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public static function register(string $class, callable $setup): object

Returns the existing instance, or creates one using the given factory callable.

Example ​

php
<?php
declare(strict_types=1);

use Raxos\Foundation\Util\Singleton;

$service = Singleton::get(MyService::class);

$configured = Singleton::register(
    MyService::class,
    static fn() => new MyService($config)
);