【PHP】php 二维关联数组的对某一个值排序

$arr=Array ( [0] =Array ( [id] =169, [sorts] =4, [fans] = 0, [created_at] =1413621597 ) [1] =Array ( [id] =170, [sorts] =5, [fans] = 5, [created_at] =1418621597 ) [2] =Array ( [id] =171, [sorts] =1, [fans] = 9, [created_at] =1413621597 ) )

$arr=Array
(
[0] =Array
(
[id] =169,
[sorts] =4,
[fans] = 0,
[created_at] =1413621597
)


[1] =Array
(
[id] =170,
[sorts] =5,
[fans] = 5,
[created_at] =1418621597
)


[2] =Array
(
[id] =171,
[sorts] =1,
[fans] = 9,
[created_at] =1413621597
)

)

$arr是一个二维的关联数组，要对sorts的值按顺序/倒叙排序,需要用到array_multisort( )这个函数。

这个函数第一个参数是数组（必填，后面参数可选），第二个是排序方式SORT_ASC默认升序，SORT_DESC 降序，第三个SORT_REGULAR默认将每一项按常规顺序排列，SORT_NUMERIC按数字顺序排列，SORT_STRING按字母顺序排列，第四个是外层数组$arr

foreach ($arr as $key => $value) {

$temp[$key]=$value['sorts'];
}

array_multisort($temp,SORT_ASC,$arr);

print_r($arr);即可