想学php5的来看看！！

想学php5的来看看！！

PHP代码:--------------------------------------------------------------------------------
function FactoryMethod($class_type)
{
switch ($class_type)
{
case “foo”:
$obj = new MyFoo();
break;
case “bar”:
$obj = new MyBar();
break;
}
return $obj;
}
$object = FactoryMethod(“foo”);
$object->method()->method()
$copy_of_object = $object->__clone();
class MyClass
{
function __destruct()
{
… // Run destructor code
}
}
delete $object;
class Shape {
function __construct()
{
// shape initialization code
…
}
…
};
class Square extends Shape
{
function __construct()
{
parent::__construct();
// square-specific initialization code
…
}
…
};
class foo
{
private $priv_var;
function some_method(…)
{
$this->priv_var = …; // zend 上写的是：$priv_var = …; ，我没试过。
}
};
class Logger
{
static $m_Instance = NULL;
function Instance()
{
if(Logger::$m_Instance == NULL)
{
Logger::$m_Instance = new Logger();
}
return Logger::$m_Instance;
}
function Log()
{
…
}
};
$Logger = Logger::Instance();
$Logger->Log(…);
try
{
…code
if (failure)
{
throw new MyException(“Failure”);
}
…code
}
catch ($exception)
{
… handle exception
throw $exception; // Re-throw exception.
}