将变量值发送到另一个php类Undefined index

Question

嗨，大家好，这可能是一个基本的但我是新手到PHP。 .so请不要...... 我有一个带有代码

的类api_category

 class API_CATEGORY extends API
 {
  // {{{ Class variables
  public $fields = array (
   'categoryid',
   'catname',
   'catdesc',
   'catparentid',
   'catviews',
   'catsort',
   'catpagetitle',
   'catmetakeywords',
   'catmetadesc',
   'catsearchkeywords',
   'catlayoutfile',
   'catparentlist',
   'catimagefile',
   'cataltcategoriescache',
   'cat_enable_optimizer',
  );

  protected $defaultvalues = array(
   'cataltcategoriescache' => ''
  );

  public $categoryid = 0;
  public $catname = '';
  public $catdesc = '';
  public $catparentid = 0;
  public $catsort = 0;
  public $catviews = 0;
  public $catpagetitle = '';
  public $catmetakeywords = '';
  public $catmetadesc = '';
  public $catsearchkeywords = '';
  public $catlayoutfile = '';
  public $catparentlist = '';
  public $catimagefile = '';
  public $cataltcategoriescache = '';
  public $cat_enable_optimizer = '';

现在这也有一个使用这些变量的函数create。

我想调用此函数，因此请使用myfile.php中的以下代码

$c = new API_CATEGORY();
$c->catname="Test";
$c->catparentid=0;
$newid = $c->create();

但它表示未定义的索引catname 和未定义的索引capparentid。

我该如何解决这个问题？

有关详细信息，请参阅我希望调用的函数

public function create($updateCache = true)
{
    $_POST['catparentlist'] = '';
    $_POST['catviews'] = 0;
    if (!$this->CategoryExists($_POST['catparentid'], $_POST['catname'])) {
        $CatId = parent::create();
    // If the save was successful
        if($CatId) {
            if ($updateCache) {
                // adjust the nested set data for the new category
                $nested = new ISC_NESTEDSET_CATEGORIES();
                $nested->adjustInsertedNode($CatId, (int)$_POST['catparentid']);

                // If the category doesn't have a parent, rebuild the root categories cache
                if($_POST['catparentid'] == 0) {
                    $GLOBALS['ISC_CLASS_DATA_STORE']->UpdateRootCategories();
                }

                // Rebuild the group pricing caches
                $GLOBALS['ISC_CLASS_DATA_STORE']->UpdateCustomerGroupsCategoryDiscounts();
            }

            // Also save our search record
            $this->saveSearch($CatId);

            // Save the words to the category_words table for search spelling suggestions
            Store_SearchSuggestion::manageSuggestedWordDatabase("category", $CatId, $_POST["catname"]);
        }

        return $CatId;
    } else {
        $this->error = sprintf(GetLang('apiCatAlreadyExists'), $_POST['catname']);
        return false;
    }
}

因此，我希望catname和catparentid成为我想要的人：/ /