PHP object instantiation Singleton method

This article mainly introduces the method of instantiating an object Singleton in PHP, which has good reference value. let's take a look at the method of instantiating an object Singleton in PHP below:

Three private and one public: two private methods, one private property, and one public method

Private function _ construct () {}// the constructor private function _ clone () {}// the clone method privare static $ _ instance cannot be inherited;

Yi gong

Public static function getinstance () {if (! Isset (static: $ _ instance) {static: $ _ instance = new static ();} return static: $ _ instance ;}

The above is all the content of this article. I hope this article will help you in your study or work, and I also hope to support PHP!

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