code: public function getParentRecords($intId, $strTable)
  	{
  		$arrReturn = array();
  
  		// Currently supports a nesting-level of 10
  		$objPages = $this->prepare("SELECT id, @pid:=pid FROM $strTable WHERE id=?" . str_repeat(" UNION SELECT id, @pid:=pid FROM $strTable WHERE id=@pid", 9))
  						 ->execute($intId);
  
  		while ($objPages->next())
  		{
  			$arrReturn[] = $objPages->id;
  		}
  
  		return $arrReturn;
  	}
docs: Return the IDs of all parent records of a particular record
  
  @param integer $intId    The ID of the record
  @param string  $strTable The table name
  
  @return array An array of parent record IDs