public function actionStart($id = null, $start = null)
{
\Yii::$app->response->format = Response::FORMAT_JSON;
$tables = \Yii::$app->session->get('backup_tables');
$id = \Yii::$app->request->post('id');
$start = \Yii::$app->request->post('start');
//备份指定表
$Database = new Database(\Yii::$app->session->get('backup_file'), \Yii::$app->session->get('backup_config'));
$start = $Database->backup($tables[$id], $start);
if (false === $start) {
//出错
return ['status' => 0, 'info' => '备份出错！'];
} elseif (0 === $start) {
//下一表
if (isset($tables[++$id])) {
$tab = array('id' => $id, 'start' => 0);
return ['status' => 1, 'tab' => $tab];
} else {
//备份完成，清空缓存
unlink(\Yii::$app->session->get('backup_config')['path'] . 'backup.lock');
\Yii::$app->session->set('backup_tables', null);
\Yii::$app->session->set('backup_file', null);
\Yii::$app->session->set('backup_config', null);
return ['status' => 1, 'info' => '备份完成！'];
}
} else {
$tab = array('id' => $id, 'start' => $start[0]);
$rate = floor(100 * ($start[0] / $start[1]));
return ['status' => 1, 'info' => "正在备份...({$rate}%)", 'tab' => $tab];
}
}
