yii\debug\panels\DbPanel::calculateTimings PHP Method

    public function calculateTimings()
    {
        if ($this->_timings === null) {
            $this->_timings = Yii::getLogger()->calculateTimings(isset($this->data['messages']) ? $this->data['messages'] : []);
        }
        return $this->_timings;
    }

 public function run($seq, $tag)
 {
     $this->controller->loadData($tag);
     $timings = $this->panel->calculateTimings();
     if (!isset($timings[$seq])) {
         throw new HttpException(404, 'Log message not found.');
     }
     $query = $timings[$seq]['info'];
     $results = $this->panel->getDb()->createCommand('EXPLAIN ' . $query)->queryAll();
     $output[] = '<table class="table"><thead><tr>' . implode(array_map(function ($key) {
         return '<th>' . $key . '</th>';
     }, array_keys($results[0]))) . '</tr></thead><tbody>';
     foreach ($results as $result) {
         $output[] = '<tr>' . implode(array_map(function ($value) {
             return '<td>' . (empty($value) ? 'NULL' : htmlspecialchars($value)) . '</td>';
         }, $result)) . '</tr>';
     }
     $output[] = '</tbody></table>';
     return implode($output);
 }