遍历php类的属性 [英] iterate over properties of a php class

问题描述

我如何遍历php类的（公共或私有）属性？

How can i iterate over the (public or private) properties of a php class?

推荐答案

tl; dr

// iterate public vars of class instance $class
foreach (get_object_vars($class) as $prop_name => $prop_value) {
   echo "$prop_name: $prop_value\n";
}

进一步的示例：

http://php.net/get_object_vars

根据作用域获取给定对象的可访问非静态属性。

Gets the accessible non-static properties of the given object according to scope.

class foo {
    private $a;
    public $b = 1;
    public $c;
    private $d;
    static $e; // statics never returned

    public function test() {
        var_dump(get_object_vars($this)); // private's will show
    }
}

$test = new foo;

var_dump(get_object_vars($test)); // private's won't show

$test->test();

输出：

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

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

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