Piwik\DataTable::deleteRow PHP Метод

    public function deleteRow($id)
    {
        if ($id === self::ID_SUMMARY_ROW) {
            $this->summaryRow = null;
            return;
        }
        if (!isset($this->rows[$id])) {
            throw new Exception("Trying to delete unknown row with idkey = {$id}");
        }
        unset($this->rows[$id]);
    }

 /**
  * See {@link PatternRecursive}.
  * 
  * @param DataTable $table
  * @return int The number of deleted rows.
  */
 public function filter($table)
 {
     $rows = $table->getRows();
     foreach ($rows as $key => $row) {
         // A row is deleted if
         // 1 - its label doesnt contain the pattern
         // AND 2 - the label is not found in the children
         $patternNotFoundInChildren = false;
         try {
             $idSubTable = $row->getIdSubDataTable();
             $subTable = Manager::getInstance()->getTable($idSubTable);
             // we delete the row if we couldn't find the pattern in any row in the
             // children hierarchy
             if ($this->filter($subTable) == 0) {
                 $patternNotFoundInChildren = true;
             }
         } catch (Exception $e) {
             // there is no subtable loaded for example
             $patternNotFoundInChildren = true;
         }
         if ($patternNotFoundInChildren && !Pattern::match($this->patternToSearchQuoted, $row->getColumn($this->columnToFilter), $invertedMatch = false)) {
             $table->deleteRow($key);
         }
     }
     return $table->getRowsCount();
 }