从排序数组 PHP 返回键的顺序

Question

我在 PHP 中有一个数组，就像这样

$somevar = array(1, 5, 2, 7, 17, 2, 13);

我想对数组进行排序，但不想移动值，所以我得到另一个数组，顺序为 index/keys。

所以我的新数组应该是这样的

{0, 2, 5, 1, 3, 6, 4}

按键的顺序是什么

Answer 1

这应该适合你：

<?php

    $somevar = array(1, 5, 2, 7, 17, 2, 13);
    $newArray = array_values($somevar);
    asort($newArray);
    $newArray = array_keys($newArray);
    print_r($newArray);

?>

输出：

Array ( [0] => 0 [1] => 2 [2] => 5 [3] => 1 [4] => 3 [5] => 6 [6] => 4 )

Answer 2

试试这个..

$somevar = array(1, 5, 2, 7, 17, 2, 13);
print_r($somevar);
//your array
Array ( [0] => 1 [1] => 5 [2] => 2 [3] => 7 [4] => 17 [5] => 2 [6] => 13 )
asort($somevar);
print_r($somevar);
//After sort
Array ( [0] => 1 [2] => 2 [5] => 2 [1] => 5 [3] => 7 [6] => 13 [4] => 17 ) 
print_r(array_keys($somevar));
//array key sorted array
Array ( [0] => 0 [1] => 2 [2] => 5 [3] => 1 [4] => 3 [5] => 6 [6] => 4 )

从排序数组 PHP 返回键的顺序

Retun order of keys from sorted array PHP

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