Question

嗯，那怎么办呢？

我有一个班级

class Themes extends Access
{
    public $theme_name;
    public $theme_by;
    public $theme_by_email;
    public $theme_by_website;
    public $theme_description;
    public $theme_thumb;
    public $theme_source;
    public $theme_uploaded_on;

    public function __construct()
    {
        parent::__construct();
        //$this->get_theme();
    }

    public function get_theme()
    {
        $sql = "SELECT *
                FROM `user_themes`
                WHERE `user_id` = " . $this->session->get('user_id');
        if($this->db->row_count($sql))
        {
            $result            = $this->db->fetch_row_assoc($sql);
            $this->$theme_name        = $result['theme_name'];
            $theme_by          = $result['theme_by'];
            $theme_by_email    = $result['theme_by_email'];
            $theme_by_website  = $result['theme_by_website'];
            $theme_description = $result['theme_description'];
            $theme_source      = $result['theme_source'];
            $theme_uploaded_on = $result['theme_uploaded_on'];
        }else{
            die('no results');
        }
    }
}

如何在课堂外访问这些变量及其内容？

在我的PHP页面中我有

$theme = new Themes();

我尝试使用

访问我的变量

$theme->them_name但是我收到了一个未定义的错误

但是我真的不知道如何访问变量......

Answer 1

根据您当前的设置，您只需拨打电话：

$theme->theme_name;
$theme->theme_by;
etc

然而，将实例变量设为公开通常是不好的做法，而是将它们设为私有并生成mutator methods。

一个例子是：

private $theme_name;

public function getThemeName(){
  return $this->theme_name;
}

public function setThemeName($theme){
  $this->theme_name = $theme;
}

Answer 2

$this->theme_name        = $result['theme_name'];
$this->theme_by          = $result['theme_by'];

关于$this前置的注释。

之后，您可以使用$theme->theme_name等

访问数据

帮助访问我班级内的变量

2 个答案: