php按值对数组进行排序，对于相等的值，按键排序
问题描述：
I have an array
(0=>0,1=>3,2=>3)
I have to sort this array first by values, and for equal values , I have to sort by order of increasing key first.
I have tried to use multisort over the array_keys(SORT_DESC) and array_values(SORT_ASC) separately, but that gives me:
(0=>0,1=>3,2=>3)
but I want
(0=>0,2=>3,1=>3)
答
You can always use simple callback to sort it. Using uksort() it will be:
$input = array(0 => 0, 2 => 3, 1 => 3);
uksort($input, function($x, $y) use ($input)
{
if($input[$x]==$input[$y])
{
return $x<$y?-1:$x!=$y;
}
return $input[$x]-$input[$y];
});