php 实现get,set方式读取属性值

/**
* 通过魔术方法实现javabean的get方法
* @param $name    参数名
* @return mixed   自动调用对应的方法名
*/
public function __get($name){
$getter = 'get'.ucfirst($name);

if (method_exists($this, $getter)) {
return $this->$getter();
}elseif (method_exists($this, 'set'.$name)){
throw new Exception('read-only property:'.$name);
}else{
throw new Exception('unknown property:'.$name);
}
}

/**
* 通过魔术方法实现javabean的set方法
* @param $name   参数名
* @param $value  参数值
*/
public function __set($name, $value){
$setter = 'set'.ucfirst($name);

if (method_exists($this, $setter)) {
$this->$setter($value);
}elseif (method_exists($this, 'get'.$name)){
throw new Exception('write-only property:'.$name);
}else {
throw new Exception('unknown property:'.$name);
}
}