php : 获取对象的属性名

//只显示public的
var_dump(get_object_vars($test));

function showAllProperties2(){
         var_dump(get_object_vars($this));
     }

//显示static的
class ABC
{
    public static $instance=‘hello‘;
}
 
function get_all_static($className)
{
    $r = new ReflectionClass($className);
    var_dump($r->getProperties());
}
 
get_all_static("ABC");