按第二个值对数组排序

Question

我有一个如下数组

Array
(
[1845267] => 2
[1845256] => 2
[1845260] => 2
[33636] => 1
[67376] => 2
[73250] => 1
[125313] => 2
[142062] => 1
[342520] => 2
[357301] => 2
[357303] => 1
[404419] => 1
[408957] => 1
[415891] => 2
[455894] => 1
[460119] => 1
[582332] => 1
[582333] => 1
[602886] => 1
)

我的目标是按照单位数对它们进行排序，这样输出结果就会把2(或最高数字)放在最前面

Array
(
[1845267] => 2
[1845256] => 2
[1845260] => 2
[415891] => 2
[125313] => 2
[67376] => 2
[342520] => 2
[357301] => 2
[33636] => 1
[73250] => 1
[142062] => 1
[357303] => 1
[404419] => 1
[408957] => 1
[455894] => 1
[460119] => 1
[582332] => 1
[582333] => 1
[602886] => 1
)

Answer 1

尝试使用arsort函数：

arsort -以逆序对数组进行排序，并维护索引关联

示例：

arsort($array);
// done, $array is now sorted

Answer 2

内置于PHP中：http://php.net/manual/en/function.arsort.php

Answer 3

基本上，你需要一个已知的数组函数用于php from here。

和函数的作用

   arsort($arr);