46 lines
706 B
PHP
46 lines
706 B
PHP
<?php
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namespace top\traits;
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/**
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* Trait Instance
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* @package top\traits
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*/
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trait Instance
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{
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/**
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* 实例
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* @var object
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*/
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private static $instance;
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/**
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* 获取类实例
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* @param null $param
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* @return static
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*/
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public static function instance($param = null)
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{
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if (!self::$instance) {
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self::$instance = new self($param);
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}
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return self::$instance;
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}
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/**
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* 私有化构造方法
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* Instance constructor.
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*/
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private function __construct()
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{
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}
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/**
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* 私有化克隆方法
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*/
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private function __clone()
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{
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// TODO: Implement __clone() method.
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}
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} |