* @since 2.0 */ class DbPanel extends Panel { public function getName() { return 'Database'; } public function getSummary() { $timings = $this->calculateTimings(); $queryCount = count($timings); $queryTime = 0; foreach ($timings as $timing) { $queryTime += $timing[3]; } $queryTime = number_format($queryTime * 1000) . ' ms'; $url = $this->getUrl(); $output = << DB queries: $queryCount time: $queryTime EOD; return $queryCount > 0 ? $output : ''; } public function getDetail() { $timings = $this->calculateTimings(); $rows = array(); foreach ($timings as $timing) { $duration = sprintf('%.1f ms', $timing[3] * 1000); $procedure = str_repeat('→', $timing[0]) . Html::encode($timing[1]); $rows[] = "$duration$procedure"; } $rows = implode("\n", $rows); return <<Database Queries $rows

Duration	Query

EOD; } private $_timings; protected function calculateTimings() { if ($this->_timings !== null) { return $this->_timings; } $messages = $this->data['messages']; $timings = array(); $stack = array(); foreach ($messages as $i => $log) { list($token, $level, $category, $timestamp) = $log; $log[4] = $i; if ($level == Logger::LEVEL_PROFILE_BEGIN) { $stack[] = $log; } elseif ($level == Logger::LEVEL_PROFILE_END) { if (($last = array_pop($stack)) !== null && $last[0] === $token) { $timings[$last[4]] = array(count($stack), $token, $last[3], $timestamp - $last[3]); } } } $now = microtime(true); while (($last = array_pop($stack)) !== null) { $delta = $now - $last[3]; $timings[$last[4]] = array(count($stack), $last[0], $last[2], $delta); } ksort($timings); return $this->_timings = $timings; } public function save() { $target = $this->module->logTarget; $messages = $target->filterMessages($target->messages, Logger::LEVEL_PROFILE, array('yii\db\Command::queryInternal')); return array( 'messages' => $messages, ); } }