28 lines
395 B
PHP
28 lines
395 B
PHP
<?php
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namespace App\Traits;
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/**
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* Trait StaticInstance
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*
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* @package App\Traits
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*/
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trait StaticInstance
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{
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private static $instance;
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/**
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* 获取单例
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*
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* @return static
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*/
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static public function getInstance()
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{
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if (is_null(static::$instance)) {
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static::$instance = new static();
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}
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return static::$instance;
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}
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}
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