嘿，伙计们，我希望一个非常快的！
我有一个阵列
array(
(int) 30 => array(
'score' => (int) 30,
'max_score' => (int) 40,
'username' => 'joeappleton',
'user_id' => '1'
),
(int) 34 => array(
'score' => (int) 34,
'max_score' => (int) 40,
'username' => 'joeappleton',
'user_id' => '1'
),
(int) 36 => array(
'score' => (int) 36,
'max_score' => (int) 40,
'username' => 'joeappleton',
'user_id' => '1'
)
)
我需要通过引用数组键将其按降序排序：
array(
36 => array('score' => 36, 'max_score' => 40, 'username' => 'joeappleton', 'user_id' => '1'),
34 => array('score' => 34, 'max_score' => 40, 'username' => 'joeappleton', 'user_id' => '1'),
30 => array('score' => 36, 'max_score' => 40, 'username' => 'joeappleton', 'user_id' => '1')
);
我试过krsort（），但没有任何乐趣，它似乎返回了一个bool。有什么想法吗？
好的，问题是krsort（）使用了pass-by-reference。它对原始数组进行排序并返回一个bool。
我更改了
return krsort($returnArray); //this returned true
至
krsort($returnArray);
return $returnArray;
我们可以使用array_multissort，它可以得到您想要的相同结果！！！
<?php
$people = array(
(int) 30 => array(
'score' => (int) 30,
'max_score' => (int) 40,
'username' => 'joeappleton',
'user_id' => '1'
),
(int) 34 => array(
'score' => (int) 34,
'max_score' => (int) 40,
'username' => 'joeappleton',
'user_id' => '1'
),
(int) 36 => array(
'score' => (int) 36,
'max_score' => (int) 40,
'username' => 'joeappleton',
'user_id' => '1'
));
//var_dump($people);
$sortArray = array();
foreach($people as $person){
foreach($person as $key=>$value){
if(!isset($sortArray[$key])){
$sortArray[$key] = array();
}
$sortArray[$key][] = $value;
}
}
$orderby = "score"; //change this to whatever key you want from the array
array_multisort($sortArray[$orderby],SORT_DESC,$people);
//var_dump($people);
print_r($people);
?>