dongtanliefang8765 2018-05-18 14:41
浏览 843
已采纳

如何在mysql查询中使用foreach循环

I want to add some condition to my sql select by using foreach loop. For example:

select id, custom_id, name, customer from db_clients where id = 5

By using foreach I want to and more "where" condition.

select id, custom_id, name, customer from db_clients where id = 5 and id = 19

My PHP code:

$this ='select id, custom_id, name, customer from db_clients where id = 5' . foreach($ids AS $id){
'. and id = '.$id}';

Where is the problem ?

  • 写回答

1条回答 默认 最新

  • dongyun6835 2018-05-18 14:52
    关注
    $this ='select id, custom_id, name, customer from db_clients where id in ('.implode(',',$ids).') ';
    

    That does assume $ids always has at least one array value, it is can be empty you need to add another check before doing that or add a -1 or some id that will never exists into the array before populating it just to be sure it's never empty there's many ways to handle an empty situation.

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论
编辑
预览

报告相同问题?

悬赏问题

  • ¥15 PADS Logic 原理图
  • ¥15 PADS Logic 图标
  • ¥15 电脑和power bi环境都是英文如何将日期层次结构转换成英文
  • ¥20 气象站点数据求取中~
  • ¥15 如何获取APP内弹出的网址链接
  • ¥15 wifi 图标不见了 不知道怎么办 上不了网 变成小地球了
手机看
程序员都在用的中文IT技术交流社区

程序员都在用的中文IT技术交流社区

专业的中文 IT 技术社区,与千万技术人共成长

专业的中文 IT 技术社区,与千万技术人共成长

关注【CSDN】视频号,行业资讯、技术分享精彩不断,直播好礼送不停!

关注【CSDN】视频号,行业资讯、技术分享精彩不断,直播好礼送不停!

客服 返回
顶部