Question

我正在尝试获取由类定义的属性列表（类变量）。这可以使用get_class_vars()完成。不幸的是，我也需要了解这些变量的范围（公共/私人/受保护）。

<?php
class test {
  public $publicProperty = 1;
  protected $protectedProperty = 2;
  private $privateProperty = 3;

  public function getClassVars() {
    return get_class_vars(__CLASS__);
  }

}

$test = new test();
var_dump($test->getClassVars());

输出：

array(3) {
  ["publicProperty"]=> int(1)
  ["protectedProperty"]=> int(2)
  ["privateProperty"]=> int(3)
}

有没有办法获得范围，以便我可以获得例如property $protectedProperty是受保护的var？

背景：仍然试图找到一个解决我已经在我的问题Changed behavior of (un)serialize()?中描述的令人讨厌的php bug的工作

Answer 1

您应该使用ReflectionClass

<?php
class Foo {
    public    $foo  = 1;
    protected $bar  = 2;
    private   $baz  = 3;
}

$foo = new Foo();

$reflect = new ReflectionClass($foo);
$props   = $reflect->getProperties(ReflectionProperty::IS_PUBLIC | ReflectionProperty::IS_PROTECTED);

foreach ($props as $prop) {
    print $prop->getName() . "\n";
}

var_dump($props);

?>

Answer 2

以防某人需要解决上述问题。

根据@Kelvin的回答，我想出了以下实现。

<?php
class TestClass {
    public    $publicProperty  = 1;
    protected $protectedProperty  = 2;
    private   $privateProperty  = 3;

    /**
    * Returns an associative array of structure scope => property names
    * @return array
    **/
    public function getPropertiesByScope() {
      $properties = [];
      $scopes = [
        ReflectionProperty::IS_PUBLIC => 'public',
        ReflectionProperty::IS_PROTECTED => 'protected',
        ReflectionProperty::IS_PRIVATE => 'private'
      ];

      foreach($scopes as $scope => $name) {
        $properties[$name] = [];

        $reflect = new ReflectionClass($this);
        $props  = $reflect->getProperties($scope);
        foreach($props as $p) {
          $properties[$name][] = $p->name;
        }
      }

      return $properties;
    }
}

$test = new TestClass();
var_dump($test->getPropertiesByScope());        
?>

输出：

array(3) {
  ["public"]=>
  array(1) {
    [0]=>
    string(14) "publicProperty"
  }
  ["protected"]=>
  array(1) {
    [0]=>
    string(17) "protectedProperty"
  }
  ["private"]=>
  array(1) {
    [0]=>
    string(15) "privateProperty"
  }
}

获得类变量的范围

2 个答案: