先看看php官方文档的解释:
__set() is run when writing data to inaccessible properties.
__get() is utilized for reading data from inaccessible properties. 究竟用中文怎么翻译呢？ inaccessible ：n. 难达到；难接近；无法理解。
有代码有真相：
[U]复制代码[/U] 代码如下:
a); //output: 123
var_dump($s->b); //output: 123
var_dump($s->c); //output: null
var_dump($s->d); //output: 0
var_dump($s->e); //output: 123
$s->a = 3; //output: This is set function
$s->c = 3; //no output
$s->f = 3; //output: This is set function
?>