Class yii\debug\actions\db\ExplainAction

Inheritanceyii\debug\actions\db\ExplainAction » yii\base\Action
Available since extension's version2.0.6
Source Code

ExplainAction provides EXPLAIN information for SQL queries

Public Properties

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Property Type Description Defined By
$panel yii\debug\panels\DbPanel yii\debug\actions\db\ExplainAction

Public Methods

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Method Description Defined By
run() Runs the action. yii\debug\actions\db\ExplainAction

Property Details

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$panel public property

Method Details

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run() public method

Runs the action.

public string run ( $seq, $tag )
$seq string
$tag string
throws \yii\web\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)
    $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);