DBDiff\DB\DBManager::getKey PHP Method

    public function getKey($connection, $table)
    {
        $keys = $this->getDB($connection)->select("show indexes from `{$table}`");
        $ukey = [];
        foreach ($keys as $key) {
            if ($key['Key_name'] === 'PRIMARY') {
                $ukey[] = $key['Column_name'];
            }
        }
        return $ukey;
    }