help with accessing variables inside of my class

Hmmm, so how is this done?

I have a class

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'];
        }els开发者_运维技巧e{
            die('no results');
        }
    }
}

How can I access these variables and their contents outside of the class?

in my PHP page I have

$theme = new Themes();

I tried to access my variable using

$theme->them_name but I get an undefined error

but don't really know how I can access the variable...

With your current setup, all you have to do is call:

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

However it is generally not good practice to make instance variables public, rather make them private and make mutator methods.

An example would be:

private $theme_name;

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

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

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

Note on $this prepended.

After that you can access the data using $theme->theme_name etc