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Example code of phptailors/singleton-interface

Informations about the package singleton-interface

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phptailors/singleton-interface

A PHP Interface for Singletons. See SingletonInterface.

Installation

Usage

A minimal implementation (example):

Expected features of a Singleton

A real Singleton in PHP:

  1. Should NOT be extendable (should be final).
  2. Should have a private constructor (__construct()).
  3. Its getInstance() should return a single instance of its class.
  4. Should NOT be cloneable (__clone() should be a private method).
  5. Should always throw Tailors\Lib\Singleton\SingletonException on unserialize() (from __wakeup()).

Testing Singleton behavior

The behavior of a Singleton may be tested using phptailors/singleton-testing.

All versions of singleton-interface with dependencies

PHP Build Version
Package Version
Requires php Version >=8.0
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