doulin6761 2019-06-17 22:42
浏览 192
已采纳

如何在没有for循环的情况下获取数组值?

I have a json_decode array which I can access the values fine with a foreach like this :

foreach ($prodvariants["result"]["sync_variants"] as $variant) {
                echo  $product_name = $variant['product']['name'];
            }

This works great.

But what if I do not want a foreach? How can I access the same values but without the forloop?

I tried this

$variant =$prodvariants["result"]["sync_variants"];
echo $product_name = $variant['product']['name'];

But when I try it like this,without the foreach I get error

Notice: Undefined index: product

  • 写回答

1条回答 默认 最新

  • douyou7797 2019-06-17 22:45
    关注

    You missed one key there.

    echo $product_name = $variant[0]['product']['name'];
                                 ^^^
    

    If JSON has numeric keys, it will be [0]. If you're using another keys, just change it.

    But without any loop (for, foreach, while) you can't access to all variants in one line of code. You can choose just a single record. It's a non-sense to get loop out.

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论

报告相同问题?

悬赏问题

  • ¥15 Python中的request,如何使用ssr节点,通过代理requests网页。本人在泰国,需要用大陆ip才能玩网页游戏,合法合规。
  • ¥100 为什么这个恒流源电路不能恒流?
  • ¥15 有偿求跨组件数据流路径图
  • ¥15 写一个方法checkPerson,入参实体类Person,出参布尔值
  • ¥15 我想咨询一下路面纹理三维点云数据处理的一些问题,上传的坐标文件里是怎么对无序点进行编号的,以及xy坐标在处理的时候是进行整体模型分片处理的吗
  • ¥15 CSAPPattacklab
  • ¥15 一直显示正在等待HID—ISP
  • ¥15 Python turtle 画图
  • ¥15 stm32开发clion时遇到的编译问题
  • ¥15 lna设计 源简并电感型共源放大器