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PHP object instantiation singleton method

高洛峰
高洛峰Original
2017-01-21 11:54:271439browse

PHP method of instantiating an object singleton:

Three private and one public: 2 private methods, 1 private property, 1 public method

private function __construct(){} //不可以继承构造方法
private function __clone(){}//不可以继承克隆方法
privare static $_instance;

一公

public static function getinstance(){
    if(!isset(static:$_instance)){
      static::$_instance=new static();
      }
      return static::$_instance;
  }

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