81 lines
1.4 KiB
PHP
81 lines
1.4 KiB
PHP
<?php
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/**
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* MiniMVC
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*
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* Convention-based micro-framework for PHP
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*
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* @package miniMVC
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* @author Timothy J. Warren
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* @copyright Copyright (c) 2011 - 2012
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* @link https://github.com/aviat4ion/miniMVC
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* @license http://philsturgeon.co.uk/code/dbad-license
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*/
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// --------------------------------------------------------------------------
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namespace miniMVC;
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/**
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* Singleton pattern
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*
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* @package miniMVC
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* @subpackage System
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*/
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trait Singleton {
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use Generic;
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/**
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* Singleton object
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*
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* @var self
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*/
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protected static $instance;
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/**
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* Protected constructor for creating the one instance
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*/
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abstract protected function __construct();
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/**
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* PHP magic method that is called when an object is treated as a function
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*
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* @param array $params
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* @return self
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*/
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public static function __invoke($params = [])
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{
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return self::get_instance($params);
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}
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// --------------------------------------------------------------------------
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/**
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* Singleton getter function
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*
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* @return self
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*/
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public static function &get_instance()
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{
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if ( ! isset(self::$instance))
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{
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$class = __CLASS__;
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self::$instance = new $class;
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}
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return self::$instance;
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}
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// --------------------------------------------------------------------------
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/**
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* Magic function called when cloning an object
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*/
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public function __clone()
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{
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trigger_error('Clone is not allowed.', E_USER_ERROR);
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}
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}
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// End of Singleton.php
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