Nette\Database\Helpers::toPairs PHP Méthode

    public static function toPairs(array $rows, $key = NULL, $value = NULL)
    {
        if (!$rows) {
            return [];
        }
        $keys = array_keys((array) reset($rows));
        if (!count($keys)) {
            throw new \LogicException('Result set does not contain any column.');
        } elseif ($key === NULL && $value === NULL) {
            if (count($keys) === 1) {
                list($value) = $keys;
            } else {
                list($key, $value) = $keys;
            }
        }
        $return = [];
        if ($key === NULL) {
            foreach ($rows as $row) {
                $return[] = $value === NULL ? $row : $row[$value];
            }
        } else {
            foreach ($rows as $row) {
                $return[is_object($row[$key]) ? (string) $row[$key] : $row[$key]] = $value === NULL ? $row : $row[$value];
            }
        }
        return $return;
    }

 /**
  * @inheritDoc
  */
 public function fetchPairs($key = NULL, $value = NULL)
 {
     return Nette\Database\Helpers::toPairs($this->fetchAll(), $key, $value);
 }