How to use ZF framework Registry (registry)

study homework

require_once("Zend/Loader.php");
Zend_Loader::loadClass("Zend_Registry");
$Arr = array
(
 'host' => '127.0.0.1' ,
 'username' => 'root',
 'password' => '111',
 'dbname' => 'test'
);
$Reg = new Zend_Registry($Arr);
echo ' Hostname:' . $Reg['host'] . "";
echo 'Username:' . $Reg['username'] . "";
echo 'Password:' . $Reg['password'] . "";
echo 'Database:' . $Reg['dbname'] . "";
echo "";
Zend_Registry:: set('table name','sanguo'); //SET assignment method, you can also assign the value to an array
echo Zend_Registry::get('table name'); //GET value method
?>

//Introducing Loader to automatically load classes
require_once("Zend/Loader.php");
//Loading registry object classes
Zend_Loader::loadClass("Zend_Registry");
 /*------------------------------------------------ --------*/
//Perform registry operations in object mode
//Assign the resources of the instantiated registry object class to $Reg
$Reg = new Zend_Registry();
//Talk about $Reg Convert to object format
Zend_Registry::setInstance($Reg);
//Assign value to $Reg (registry assignment)
$Reg ->name = 'Zhang San';
$Reg ->sex = 'Male ';
$Reg ->age = '18';
//Output after obtaining the static object.
$Reg = Zend_Registry::getInstance();
echo "The name is: " . $Reg->name . " ";
echo "Gender is:" . $Reg->sex . "";
echo "Age is:" . $Reg->age . "";
/*-------------------------------------------------- ---------*/
$Arr = array('Name' => 'Zhang San','Age' => '18','Hobby' => 'Internet');
 Zend_Registry::set('My',$Arr);
class Person
{
 public function My()
 {
 echo "My name is:" . Zend_Registry::get('My')['Name'] . "";
 echo "My age is:" . Zend_Registry::get('My')['Age'] . "";
 echo "My hobbies are:" . Zend_Registry::get('My')['Hobby'] . "";
 }
}
$Person = new Person();
$Person -> My();
?>