Php 从数组中的数组创建升序数组

我在PHP中有一个数组，数组中有一个数组，包含name和rank。 我希望队伍按顺序排列。i、 e从1到16

$info = array(  array( "Name"=> "Ayush Mishra", "Rank"=> "1"),  
  array( "Name"=> "Ayush Mishra", "Rank"=> "16"),  
  array( "Name"=> "Ayush Mishra", "Rank"=> "14"),  
  array( "Name"=> "Ayush Mishra", "Rank"=> "15"),  
  array( "Name"=> "Ayush Mishra", "Rank"=> "13"),  
  array( "Name"=> "Ayush Mishra", "Rank"=> "12"),  
  array( "Name"=> "Ayush Mishra", "Rank"=> "11"),  
  array( "Name"=> "Ayush Mishra", "Rank"=> "10"),  
  array( "Name"=> "Ayush Mishra", "Rank"=> "8"),  
  array( "Name"=> "Ayush Mishra", "Rank"=> "9"),  
  array( "Name"=> "Ayush Mishra", "Rank"=> "7"),  
  array( "Name"=> "Ayush Mishra", "Rank"=> "5"),  
  array( "Name"=> "Ayush Mishra", "Rank"=> "4"),  
  array( "Name"=> "Ayush Mishra", "Rank"=> "3"),  
  array( "Name"=> "Ayush Mishra", "Rank"=> "6"),  
  array( "Name"=> "Ayush Mishra", "Rank"=> "2"),   ); 

我想要上面数组中的这个数组。这是我想要得到的结果数组

$result = array( 


  array( "Name"=> "Ayush Mishra", "Rank"=> "1"),  
  array( "Name"=> "Teaser", "Rank"=> "2"), 
  array( "Name"=> "Pussel", "Rank"=> "3"),
  array( "Name"=> "Condomso", "Rank"=> "4"),  
  array( "Name"=> "Branite", "Rank"=> "5"),  
  array( "Name"=> "Biknol", "Rank"=> "6"),  
  array( "Name"=> "Fuckita", "Rank"=> "7"),
  array( "Name"=> "James", "Rank"=> "8"),  
  array( "Name"=> "Babita", "Rank"=> "9"),  
  array( "Name"=> "Mathse", "Rank"=> "10"), 
  array( "Name"=> "rohan", "Rank"=> "11"),  
  array( "Name"=> "Alex", "Rank"=> "12"), 
  array( "Name"=> "Peter", "Rank"=> "13"),  
  array( "Name"=> "Gabbar Singh", "Rank"=> "14"),  
  array( "Name"=> "raghav", "Rank"=> "15"), 
  array( "Name"=> "Shivam", "Rank"=> "16"),  


             ); 

我想要上面的数组作为$info的结果。请给我将$info更改为$result的代码。

使用，使用用户定义的比较函数按值对数组排序

usort($info, 'sortfn');

function sortfn($a, $b)
{
    if($a['Rank'] == $b['Rank'])
        return ($a['Rank'] > $b['Rank']);
    else
        return ($a['Rank'] < $b['Rank']);
}

usort（$info，'sortfn'）；
函数sortfn（$a，$b）
{
如果（$a['Rank']=$b['Rank']）
回报（$a['Rank']>$b['Rank']）；
其他的
回报（$a['Rank']<$b['Rank']）；
}

---

不需要更多：

function sort_by_rank($a, $b) {
    return $a['Rank'] > $b['Rank'];
}

usort($info, "sort_by_rank");
print_r($info);

输出

Array
(
    [0] => Array
        (
            [Name] => Ayush Mishra
            [Rank] => 1
        )

    [1] => Array
        (
            [Name] => Ayush Mishra
            [Rank] => 2
        )

    [2] => Array
        (
            [Name] => Ayush Mishra
            [Rank] => 3
        )

    [3] => Array
        (
            [Name] => Ayush Mishra
            [Rank] => 4
        )

    [4] => Array
        (
            [Name] => Ayush Mishra
            [Rank] => 5
        )

    [5] => Array
        (
            [Name] => Ayush Mishra
            [Rank] => 6
        )

    [6] => Array
        (
            [Name] => Ayush Mishra
            [Rank] => 7
        )

    [7] => Array
        (
            [Name] => Ayush Mishra
            [Rank] => 8
        )

    [8] => Array
        (
            [Name] => Ayush Mishra
            [Rank] => 9
        )

    [9] => Array
        (
            [Name] => Ayush Mishra
            [Rank] => 10
        )

    [10] => Array
        (
            [Name] => Ayush Mishra
            [Rank] => 11
        )

    [11] => Array
        (
            [Name] => Ayush Mishra
            [Rank] => 12
        )

    [12] => Array
        (
            [Name] => Ayush Mishra
            [Rank] => 13
        )

    [13] => Array
        (
            [Name] => Ayush Mishra
            [Rank] => 14
        )

    [14] => Array
        (
            [Name] => Ayush Mishra
            [Rank] => 15
        )

    [15] => Array
        (
            [Name] => Ayush Mishra
            [Rank] => 16
        )

)

---

如果您想保留原始索引（从您的问题来看，这似乎不是一项要求），但如果是这样，则使用

uasort

而不是

usort

，您可以定义自己的排序函数：

function cmp($a, $b)
{
  if ($a['Rank'] == $b['Rank'])
    return 0;
  return ($a['Rank'] < $b['Rank']) ? -1 : 1;
}

uasort($info, "cmp");

函数cmp（$a，$b）
{
如果（$a['Rank']=$b['Rank']）
返回0；
回报（$a['Rank']<$b['Rank']）？-1:1；
}
uasort（$info，“cmp”）；

---

请注意，我使用了

uasort

而不是

usort

，这是因为要维护键。查看更多信息。

我想您是想根据排名来订购的

$rank = array();
foreach ($result as $key => $row)
{
    $rank[$key] = $row['rank'];
}
array_multisort($rank, SORT_DESC, $result);

这是密码，

$result=$info；
对于（$i=0；$i

很抱歉，$info中的名称不全是AYush Mishra，它们与$reuslt中的名称相同。对我来说似乎有些过火，但我想它会产生正确的结果。@sberry我很乐意帮助你。这对我没有帮助。就像我说的，这太过分了，意味着你做的远远超过了你需要做的。内置函数

usort

和

uasort

可以处理所有这些。您不需要返回-1和1，只需返回

$a['Rank']>$b['Rank']

的布尔值即可。是，PHP中的比较运算符执行一些神奇的隐式转换，如果两个字符串都是数字的，则这些转换将处理字符串比较。

$rank = array();
foreach ($result as $key => $row)
{
    $rank[$key] = $row['rank'];
}
array_multisort($rank, SORT_DESC, $result);

// this function will sort your multidimensional array by value
function aasort (&$array, $key) {
    $sorter=array();
    $ret=array();
    reset($array);
    foreach ($array as $ii => $va) {
        $sorter[$ii]=$va[$key];
    }
    asort($sorter);
    foreach ($sorter as $ii => $va) {
        $ret[$ii]=$array[$ii];
    }
    $array=$ret;
}

$info = array(  array( "Name"=> "Ayush Mishra", "Rank"=> "1"),  
  array( "Name"=> "Ayush Mishra", "Rank"=> "16"),  
  array( "Name"=> "Ayush Mishra", "Rank"=> "14"),  
  array( "Name"=> "Ayush Mishra", "Rank"=> "15"),  
  array( "Name"=> "Ayush Mishra", "Rank"=> "13"),  
  array( "Name"=> "Ayush Mishra", "Rank"=> "12"),  
  array( "Name"=> "Ayush Mishra", "Rank"=> "11"),  
  array( "Name"=> "Ayush Mishra", "Rank"=> "10"),  
  array( "Name"=> "Ayush Mishra", "Rank"=> "8"),  
  array( "Name"=> "Ayush Mishra", "Rank"=> "9"),  
  array( "Name"=> "Ayush Mishra", "Rank"=> "7"),  
  array( "Name"=> "Ayush Mishra", "Rank"=> "5"),  
  array( "Name"=> "Ayush Mishra", "Rank"=> "4"),  
  array( "Name"=> "Ayush Mishra", "Rank"=> "3"),  
  array( "Name"=> "Ayush Mishra", "Rank"=> "6"),  
  array( "Name"=> "Ayush Mishra", "Rank"=> "2"),   ); 


aasort($info,"Rank");

echo '<pre>';print_r($info);

Array
(
    [0] => Array
        (
            [Name] => Ayush Mishra
            [Rank] => 1
        )

    [15] => Array
        (
            [Name] => Ayush Mishra
            [Rank] => 2
        )

    [13] => Array
        (
            [Name] => Ayush Mishra
            [Rank] => 3
        )

    [12] => Array
        (
            [Name] => Ayush Mishra
            [Rank] => 4
        )

    [11] => Array
        (
            [Name] => Ayush Mishra
            [Rank] => 5
        )

    [14] => Array
        (
            [Name] => Ayush Mishra
            [Rank] => 6
        )

    [10] => Array
        (
            [Name] => Ayush Mishra
            [Rank] => 7
        )

    [8] => Array
        (
            [Name] => Ayush Mishra
            [Rank] => 8
        )

    [9] => Array
        (
            [Name] => Ayush Mishra
            [Rank] => 9
        )

    [7] => Array
        (
            [Name] => Ayush Mishra
            [Rank] => 10
        )

    [6] => Array
        (
            [Name] => Ayush Mishra
            [Rank] => 11
        )

    [5] => Array
        (
            [Name] => Ayush Mishra
            [Rank] => 12
        )

    [4] => Array
        (
            [Name] => Ayush Mishra
            [Rank] => 13
        )

    [2] => Array
        (
            [Name] => Ayush Mishra
            [Rank] => 14
        )

    [3] => Array
        (
            [Name] => Ayush Mishra
            [Rank] => 15
        )

    [1] => Array
        (
            [Name] => Ayush Mishra
            [Rank] => 16
        )

)

$result = $info;

for ($i = 0; $i < count($result); $i++)
{
    for ($j = 0; $j < $i; $j++)
    {
        //sorting based on rank
        if($result[$i]["Rank"] < $result[$j]["Rank"])
        {
            //Swapping rank
            $rank = $result[$i]["Rank"];
            $result[$i]["Rank"] = $result[$j]["Rank"];
            $result[$j]["Rank"] =$rank;

            //Swapping corresponding Names
            $name = $result[$i]["Name"];
            $result[$i]["Name"] = $result[$j]["Name"];
            $result[$j]["Name"] =$name;
        }       
    }
}