Some tools that assist you, such as file reader, sql clause builder ...
<?php $helper = new \box\Downloader\Helper($source_path, $target_path) ; $helper->start() ;
<?php $helper = new \box\ListHelper() ; $helper->setConsumerNum(10) # 设置消费者数量 ->setListData($list) # 设置待消费队列数据 ->setHandler($consumer, $args...) # 设置消费者函数和必须额外参数