Question

我想对一个php数组进行排序，其键值组合是动态的，因此很难定义一个函数并应用usort（）这是数组

Array ( 
    [0] => Array ( [PAYE] => 43 ) 
    [1] => Array ( [VAT] => 2 ) 
    [2] => Array ( [NHIF] => 1 ) 
    [3] => Array ( [NSSF] => 2 ) 
    [4] => Array ( [MPESA] => 1 ) 
    [5] => Array ( [EQUITEL] => 1 ) 
    [6] => Array ( [AIRTEL] => 1 ) 
    [7] => Array ( [CER] => 2 ) 
    [8] => Array ( [BDD] => 4 ) 
    [9] => Array ( [BMI] => 1 ) 
    [10] => Array ( [TG] => 7 ) 
    [11] => Array ( [BT] => 3 ) 
    [12] => Array ( [EPL] => 4 ) 
    [13] => Array ( [KPL] => 8 ) 
)

我想使用最右边的值对数组进行排序。结果应该是

Array ( 
    [0] => Array ( [PAYE] => 43 ) 
    [13] => Array ( [KPL] => 8 )
    [10] => Array ( [TG] => 7 ) 
    [8] => Array ( [BDD] => 4 ) 
    [12] => Array ( [EPL] => 4 )
    [11] => Array ( [BT] => 3 )
    [7] => Array ( [CER] => 2 ) 
    [3] => Array ( [NSSF] => 2 ) 
    [1] => Array ( [VAT] => 2 )
    [3] => Array ( [NSSF] => 2 ) 
    [6] => Array ( [AIRTEL] => 1 ) 
    [9] => Array ( [BMI] => 1 ) 
    [4] => Array ( [MPESA] => 1 ) 
    [2] => Array ( [NHIF] => 1 ) 
)

我应该怎么做？

Answer 1

使用uasort函数保存密钥，array_shift使用值进行比较

uasort($array, function($i1, $i2) {  
                  return array_shift($i2) - array_shift($i1); });

print_r($array);

Answer 2

current和// $arr is your initial array uasort($arr, function($a, $b){ // will maintain index association return current($b) - current($a); });函数可以完成这项工作：

{{1}}

http://php.net/manual/en/function.current.php

使用动态密钥名称对multimedinsional数组进行排序

2 个答案: