Question

php按数字大小排序数组

{"xx":xx,"xxx":"xxx""Username":{"c":{"Count":9,"stat":{"zt":"playing","Timestamp":1498821984}},"wsz":{"Count":10,"stat":{"zt":"playing","Timestamp":1498841984}},"a":{"Count":17,"stat":{"zt":"playing","Timestamp":1492391984}},"b":{"Count":18,"stat":{"zt":"playing","Timestamp":1412391984}}}}
有一数组 如上[为了方便阅读转成json]
如何让[username]按[Count]值从大到小排序？
如
{"xx":xx,"xxx":"xxx""Username":{"b":{"Count":18,"stat":{"zt":"playing","Timestamp":1412391984}},"a":{"Count":17,"stat":{"zt":"playing","Timestamp":1492391984}},"wsz":{"Count":10,"stat":{"zt":"playing","Timestamp":1498841984}},"c":{"Count":9,"stat":{"zt":"playing","Timestamp":1498821984}}}}

Answer 1

php 有几个函数
sort() 函数用于对数组单元从低到高进行排序。
rsort() 函数用于对数组单元从高到低进行排序。
asort() 函数用于对数组单元从低到高进行排序并保持索引关系。
arsort() 函数用于对数组单元从高到低进行排序并保持索引关系。
ksort() 函数用于对数组单元按照键名从低到高进行排序。
krsort() 函数用于对数组单元按照键名从高到低进行排序。

追问

然而这几个函数并没卵用

Answer 2

最笨的办法就是遍历，按冒泡排序啥的搞出来