[英]PHP getters / setters
我正在嘗試學習這個 MVC OOP 東西,我偶然發現了一個奇怪的錯誤:
Fatal error: Call to undefined method Foo::stuff() in ...
我的代碼:
class Foo extends FooBase{
static $_instance;
private $_stuff;
public function getStuff($which = false){
if($which) return self::app()->_stuff[$which]; else return self::app()->_stuff;
}
public function setStuff($stuff){
self::app()->_stuff = $stuff;
}
public static function app(){
if (!(self::$_instance instanceof self)){
self::$_instance = new self();
}
return self::$_instance;
}
}
Foo::app()->stuff = array('name' => 'Foo', 'content' => 'whatever');
echo Foo::app()->stuff('name'); // <- this doesn't work...
FooBase class 看起來像這樣:
class FooBase{
public function __get($name){
$getter = "get{$name}";
if(method_exists($this, $getter)) return $this->$getter();
throw new Exception("Property {$name} is not defined.");
}
public function __set($name, $value){
$setter = "set{$name}";
if(method_exists($this, $setter)) return $this->$setter($value);
if(method_exists($this, "get{$name}"))
throw new Exception("Property {$name} is read only.");
else
throw new Exception("Property {$name} is not defined.");
}
}
所以如果我理解正確,吸氣劑 function 不能有 arguments? 為什么? 還是我在這里做錯了什么?
任何帶有省略號的東西都被視為一種方法。 神奇的__get
和__set
方法只適用於看起來像屬性的東西。
有關方法魔術,請參閱__call()
。
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