迭代php类的属性

Question

如何迭代php类的（公共或私有）属性？

Answer 1

tl; dr;

// iterate public vars of class instance $class
foreach (get_object_vars($class) as $prop) {
   echo "$prop\n";
}

<强>解释

http://nz.php.net/get_object_vars

class foo {
    private $a;
    public $b = 1;
    public $c;
    private $d;
    static $e;

    public function test() {
        var_dump(get_object_vars($this));
    }
}

$test = new foo;

var_dump(get_object_vars($test));

$test->test();

?>

array(2) {
  ["b"]=> int(1)
  ["c"]=> NULL
}

array(4) {
  ["a"]=> NULL
  ["b"]=> int(1)
  ["c"]=> NULL
  ["d"]=> NULL
}