In this example, we store values in the registry, and we retrieve values from the registry. We access the registry with the static methods, or we access the registry as an array or as an object.
Components used in this example
Implementation of a registry
class MyRegistry
{
- We get the method and the action,
- We load the content of the registry. The content of registry is made persistent for the purpose of this example.
- We get the value to store in the registry.
- We store the value in the registry with the requested method.
- We save the content of the registry.
- If we catch an exception, we return the error message.
public function process()
{
// We get the method and the action,
list($method, $action) = $this->_getParameters();
try {
$result = array();
// We load the content of the registry.
// The content of registry is made persistent for the purpose of this example.
$data = $this->_loadRegistry();
// We get the value to store in the registry.
@list($key, $value) = explode(' => ', $action);
$value or $value = null;
// We store the value in the registry with the requested method.
switch ($method) {
case 'static':
array_key_exists('fruit', $data) and
Zend_Registry::set('fruit', $data['fruit']);
array_key_exists('color', $data) and
Zend_Registry::set('color', $data['color']);
array_key_exists('count', $data) and
Zend_Registry::set('count', $data['count']);
$key and Zend_Registry::set($key, $value);
break;
case 'array':
$registry = new Zend_Registry($data);
Zend_Registry::setInstance($registry);
$key and $registry[$key] = $value;
break;
case 'object':
$registry = new Zend_Registry($data, ArrayObject::ARRAY_AS_PROPS);
Zend_Registry::setInstance($registry);
$key and $registry->$key = $value;
break;
}
// We save the content of the registry.
$this->_saveRegistry();
$result = Zend_Registry::getInstance();
} catch (Exception $e) {
// If we catch an exception, we return the error message.
$result = $e->getMessage();
}
return array($method, $result);
}
private function _getParameters()
{
$method = isset($_GET['method'])? $_GET['method'] : null;
$action = isset($_GET['action'])? $_GET['action'] : null;
return array($method, $action);
}
private function _loadRegistry()
{
isset($_COOKIE['registry']) and
$registry = unserialize(stripcslashes($_COOKIE['registry'])) and
is_array($registry) or
$registry = array();
return $registry;
}
private function _SaveRegistry()
{
$registry = array();
Zend_Registry::isRegistered('fruit') and $registry['fruit'] = Zend_Registry::get('fruit');
Zend_Registry::isRegistered('color') and $registry['color'] = Zend_Registry::get('color');
Zend_Registry::isRegistered('count') and $registry['count'] = Zend_Registry::get('count');
setcookie('registry', serialize($registry), time() + 3600, '/');
}
}
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