PHP获取对象属性的三种方法实例分析

class TestClass {
  private $a;
  protected $b;
  public $c;
  public $d;
  public static $e;
  private function funcA() {
  }
  protected function funcB() {
  }
  public function funcC() {
  }
  public function getPropertyMethodOne() {
    echo "[get_object_vars]", PHP_EOL;
    $vars = get_object_vars($this);
    foreach ($vars as $k => $v) {
      echo $k, ' => ', $v, PHP_EOL;
    }
  }
  public function getPropertyMethodTwo() {
    echo "[foreach object]", PHP_EOL;
    foreach ($this as $k => $v) {
      echo $k, ' => ', $v, PHP_EOL;
    }
  }
  public function getPropertyMethodThree() {
    echo "[reflection]", PHP_EOL;
    $class = new ReflectionClass($this);
    foreach ($class->getProperties(ReflectionProperty::IS_PUBLIC) as $property) {
      if (!$property->isStatic()) {
        echo $property->getName(), ' => ', $property->getValue($this), PHP_EOL;
      }
    }
  }
}

$obj = new TestClass();
echo "[get_object_vars]", PHP_EOL;
$vars = get_object_vars($obj);
foreach ($vars as $k => $v) {
  echo $k, ' => ', $v, PHP_EOL;
}
echo "[foreach object]", PHP_EOL;
foreach ($obj as $k => $v) {
  echo $k, ' => ', $v, PHP_EOL;
}
echo "[reflection]", PHP_EOL;
$class = new ReflectionClass($obj);
foreach ($class->getProperties(ReflectionProperty::IS_PUBLIC) as $property) {
  if (!$property->isStatic()) {
    echo $property->getName(), ' => ', $property->getValue($obj), PHP_EOL;
  }
}

$obj = new TestClass();
$obj->getPropertyMethodOne();
$obj->getPropertyMethodTwo();
$obj->getPropertyMethodThree();