PHP-class with interface and error about abstract method

Question

I am working on a new widget for Tomato CMS and they use an interface:

interface Ad_Models_Interface_BannerPageAssoc
{
    ...

    /**
     * Get banner-page by Zone Id
     * 
     * @param int $zoneId Id of zone
     */
    public function getByZoneId($zoneId);
}

and another class that implements this interface:

class Ad_Models_Dao_Mysql_BannerPageAssoc extends Tomato_Model_Dao
implements Ad_Models_Interface_BannerPageAssoc
{

    public function getByZoneId($zoneId)
    {
      $sql  = sprintf("SELECT * FROM " . $this->_prefix . "ad_page_assoc");
      $rs   = mysql_query($sql);
      $rows = array();
      while ($row = mysql_fetch_object($rs)) {
        $rows[] = $row;
      }
      mysql_free_result($rs);
      return new Tomato_Model_RecordSet($rows, $this);
    }
}

When I make an object of this class and call the function, I get this error:

Fatal error: Class Ad_Models_Dao_Pdo_Mysql_BannerPageAssoc contains 1 abstract method and must therefore be declared abstract or implement the remaining methods (Ad_Models_Interface_BannerPageAssoc::getByZoneId) in C:\xampp\htdocs\roepingen\application\modules\ad\models\dao\pdo\mysql\BannerPageAssoc.php on line 59

Does anyone have an idea how I can solve this problem?

ontrack · Accepted Answer · 2010-12-12 15:15:48Z

1

Ad_Models_Dao_Mysql_BannerPageAssoc is not the same class as in the error: Ad_Models_Dao_Pdo_Mysql_BannerPageAssoc.

answered Dec 12, 2010 at 15:15

ontrack

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1 Comment

koenHuybrechts Over a year ago

This is indeed my fault ... Thanks for noticing :-)

user513873 · Accepted Answer · 2010-12-12 15:06:01Z

0

There may be a problem between your use of the keywords interface/abstract and extends/implements. You don't mention the class you actually get the error on, which is Ad_Models_Dao_Pdo_Mysql_BannerPageAssoc. That class must also implement the required methods if it implements Ad_Models_Interface_BannerPageAssoc. Interfaces are treated differently than abtract classes in PHP.

answered Dec 12, 2010 at 15:06

user513873

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