ThinkPHP5 动态创建数据表方法

  public function ceshic(){      $sql = "      CREATE TABLE IF NOT EXISTS `think_test`(      `id` int(8) unsigned NOT NULL AUTO_INCREMENT,      `name` varchar(255) NOT NULL,        PRIMARY KEY (`id`)      )      ENGINE=MyISAM      DEFAULT CHARACTER SET=utf8 COLLATE=utf8_general_ci      CHECKSUM=0      ROW_FORMAT=DYNAMIC      DELAY_KEY_WRITE=0"      ;        Db::execute($sql);  }