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vendor/yiisoft/yii2-debug/actions/db/ExplainAction.php

@@ -0,0 +1,54 @@
+<?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 $panel;
+
+
+    public function run($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);
+    }
+}