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<?php
/**
* @link http://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\debug\actions\db;
use yii\base\Action;
use yii\debug\panels\DbPanel;
use yii\web\HttpException;
/**
* ExplainAction provides EXPLAIN information for SQL queries
*
* @author Laszlo <github@lvlconsultancy.nl>
* @since 2.0.6
*/
class ExplainAction extends Action
{
/**
* @var DbPanel
*/
public $panel;
/**
* Runs the action.
*
* @param string $seq
* @param string $tag
* @return string
* @throws HttpException
* @throws \yii\db\Exception
* @throws \yii\web\NotFoundHttpException if the view file cannot be found
* @throws \yii\base\InvalidConfigException
*/
public function run($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);
}
}