Php design mode policy mode, php design mode

Php design mode policy mode, php design mode

Rule mode:

Encapsulate a group of specific behaviors and algorithms into classes to adapt to certain context environments;

For example, in an e-commerce website system, for male and female users, they must jump to different product categories, and all advertising spaces should display different advertisements.

UserStrategy. php

<?phpnamespace Baobab;interface UserStrategy{    function showAd();    function showCategory();}?>

FemaleUserStrategy. php

<? Phpnamespace Baobab; class FemaleUserStrategy implements UserStrategy {function showAd () {echo '2017 new women's clothing ';} function showCategory () {echo 'Women's clothing'; }}?>

MaleUserStrategy. php

<? Phpnamespace Baobab; class MaleUserStrategy implements UserStrategy {function showAd () {echo 'iphone6s plus ';} function showCategory () {echo 'electronic product' ;}}?>

Index. php

class Page{     protected $strategy;     function Index(){         $this->strategy->showAd();         echo '<br/>';         $this->strategy->showCategory();     }     function setStrategy(Baobab\UserStrategy $strategy){         $this->strategy = $strategy;     }}$page = new Page();if (isset($_GET['female'])){    $strategy = new Baobab\FemaleUserStrategy();}else{    $strategy = new Baobab\MaleUserStrategy();}$page->setStrategy($strategy);$page->Index();

Ioc can be implemented using the Policy mode, with dependency inversion and control inversion.