php面向对象的方法重载两种版本比较_PHP教程

class Myclass
{
public $attriable;
public $one = "this is one";
public $two = "this is two";

function __construct()
{
}

function one($one)
{
$this->one=$one;
$this->attriable = $this->one;
}

function one($one, $two)
{
$this->one=$one;
$this->two=$two;
$this->attriable = $this->one . $this->two;
}

function display()
{
echo $this->attriable;
}
}

$one = "this is my class";
$two = "Im the best";
$myclass = new myclass();
$myclass->one($one);
$myclass->display();

$myclass->one($one, $two);
$myclass->display();

//本例的做法，在 PHP 中是不正确的！
?>

class Overloader
{
private $properties = array();

function __get($property_name)
{
if(isset($this->properties[$property_name]))
{
return($this->properties[$property_name]);
}
else
{
return(NULL);
}
}

function __set($property_name, $value)
{
$this->properties[$property_name] = $value;
}

public function __call($method, $p)
{
print("Invoking $method()
\n");
//print("Arguments: ");
//print_r($args);
if($method == 'display')
{
if(is_object($p[0]))
$this->displayObject($p[0]);
else
if(is_array($p[0]))
$this->displayArray($p[0]);
else
$this->displayScalar($p[0]);
}
}

public function displayObject($p)
{
echo ("你传入的是个对象，内容如下:
");
print_r($p);
echo "

---

";
}

public function displayArray($p)
{
echo ("你传入的是个数组，内容如下:
");
print_r($p);
echo "

---

";
}

public function displayScalar($p)
{
echo ("你传入的是个单独变量，内容如下:
" . $p);
echo "

---

";
}
}

$o = new Overloader();

//调用 __set() 给一个不存在的属性变量赋值
$o->dynaProp = "Dynamic Content";

//调用 __get()
print($o->dynaProp . "
\n");

//调用 __call()
//$o->dynaMethod("Leon", "Zeev");

$o->display(array(1,2,3));
$o->display('Cat');
?>