PHP design pattern registry pattern (registration of multiple classes)_PHP tutorial

I have also written a registry class before, but that one cannot register multiple classes. The classes are stored in an array below.

Copy code The code is as follows:

//Basic class
class webSite {/ /A very simple base class
private $siteName;
private $siteUrl;
function __construct($siteName,$siteUrl){
$this->siteName=$siteName;
$this->siteUrl=$siteUrl;
}
function getName(){
return $this->siteName;
}
function getUrl(){
return $ this->siteUrl;
}
}
class registry {//Registry class singleton mode
private static $instance;
private $values=array();//Use Array stores class name
private function __construct(){}//This usage determines that this class cannot be instantiated directly
static function instance(){
if (!isset(self::$instance)) {self::$instance=new self();}
return self::$instance;
}
function get($key){//Get the registered class
if ( isset($this->values[$key])){
return $this->values[$key];
}
return null;
}
function set( $key,$value){//Registration class method
$this->values[$key]=$value;
}
}
$reg=registry::instance();
$reg->set("website",new webSite("WEB Development Notes","www.chhua.com"));//Register the class
$website=$reg-> get("website");//Get the class
echo $website->getName();//Output WEB development notes
echo $website->getUrl();//Output www.chhua. com
?>

The function of the registry is to provide system-level object access functions. Some students will say that this is unnecessary, but there is indeed no need to register classes in small projects. If it is a large project, it is still very useful.

http://www.bkjia.com/PHPjc/325018.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/325018.htmlTechArticleI have also written a registry class before, but that one cannot register multiple classes. I use an array below. Classes are stored. Copy the code. The code is as follows: ?php //Basic class class webS...