是否可以动态添加成员到PHP对象？

Question

Is it possible to add to PHP objects on the fly? Say I have this code:

$foo = stdObject();
$foo->bar = 1337;

Is this valid PHP?

Answer 1

That's technically not valid code. Try something like:

$foo = new stdClass();
$foo->bar = 1337;
var_dump($foo);

http://php.net/manual/en/language.types.object.php