排序根据其值的数组 [英] Sorting an array based on its value

问题描述

我有一个数组，
示例：

  $ {数组
 [0] {
   [某件事] = 1;
   [something2] = 2;
     }
 [1] {
   [某件事] = 2;
   [something2] = 4;
     }
 [2] {
   [某件事] = 5;
   [something2] = 2;
     }
}
 

欲基于密钥的东西阵列订购;

因此​​，这将是这样的：

  $ {数组
 [0] {
   [某件事] = 5;
   [something2] = 2;
     }
 [1] {
   [某件事] = 2;
   [something2] = 4;
     }
 [2] {
   [某件事] = 1;
   [something2] = 2;
     }
}
 

解决方案

 功能比较（$ X，$ Y）{
    返回$ x ['东西']  -  $ Y ['东西'];
}usort（$ input_array，比较）;
 

您需要使用 usort（） 类似于上面

I have an Array, Sample:

$array {
 [0] {
   [something]=1;
   [something2]=2;
     } 
 [1] {
   [something]=2;
   [something2]=4;
     }
 [2] {
   [something]=5;
   [something2]=2;
     }
}

I want to order the array based on the key something;

So it will look like:

$array {
 [0] {
   [something]=5;
   [something2]=2;
     } 
 [1] {
   [something]=2;
   [something2]=4;
     }
 [2] {
   [something]=1;
   [something2]=2;
     }
}

解决方案

function compare($x, $y) {
    return $x['something'] - $y['something'];
}

usort($input_array, 'compare');

you need to use a usort() similar to the above.

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