转自：https://blog.csdn.net/weixin_39983993/article/details/115504823

/**

• 获取 post 参数; 在 content_type 为 application/json 时，自动解析 json
• @return array
  */
  private function initPostData()
  {
  if (empty($_POST) && false !== strpos($this->contentType(), ‘application/json’)) {
  $content = file_get_contents(‘php://input’);
  $post = (array)json_decode($content, true);
  } else {
  $post = $_POST;
  }
  return $post;
  }