PHP interview question design mode, php question design mode _ PHP Tutorial

PHP interview question design mode and php question design mode. The design mode of PHP interview questions. the design mode of php questions is a question that will inevitably be asked during technical interviews, in particular, you will be given examples to illustrate the use cases of various design modes: the design mode of PHP interview questions, and the design mode of php questions.

The design pattern is a question that will inevitably be asked during the technical interview, and you will be given examples to illustrate the use cases of various design patterns.

Using design patterns can reduce our workload and optimize our code.

There are many design patterns. here we will introduce the Singleton mode, Factory mode, combination mode, and policy mode.

/*** Singleton mode **/class Config {static private $ _ instance = NULL; private $ _ settings = array (); private function _ construct () {} private function _ clone () {}; static function getInstance () {if (self ::$ _ intance = NULL) {self :: $ _ intance = new Config ();} return self: $ _ intance;} public function set ($ index, $ value) {$ this-> _ setting [$ index] = $ value;} public function get ($ index) {return $ this-> _ settings [$ index] ;}}

The idea design model is a question that will inevitably be asked during the technical interview. in particular, you will be asked to illustrate the use cases of various design models...