php如何打印对象的所有属性

Question

有时候在写模块的时候，需要知道可以用哪些属性，怎么样打印出目前该对象拥有的属性？

Answer 1

这个？

http://php.net/manual/zh/function.get-object-vars.php
http://php.net/manual/zh/function.get-class-methods.php
http://php.net/manual/zh/function.get-class-vars.php

Answer 2

可以使用 ReflectionClass 类,打印出类的结构。

示例代码：

  class Test
  {
    private $property;
    public $property2;
    protected $property3;
    
    function operation1()
    {
        //to do something...
    }
    function operation2($param)
    {
        //to do something else...
    }
  }
  $a = new Reflectionclass("Test");
  echo "<pre>";
  echo $a;
  echo "</pre>";
?>

输出如下：

  @@ /var/www/html/test.php 2-16

  - Constants [0] {
  }

  - Static properties [0] {
  }

  - Static methods [0] {
  }

  - Properties [3] {
    Property [  private $property ]
    Property [  public $property2 ]
    Property [  protected $property3 ]
  }

  - Methods [2] {
    Method [  public method operation1 ] {
      @@ /var/www/html/test.php 8 -11
    }

    Method [  public method operation2 ] {
      @@ /var/www/html/test.php 12 - 15

      - Parameters [1] {
        Parameter #0 [  $param ]
      }
    }
  }
}