我正在尝试找到一种通过深层对象项排序数组的有效方法,下面是示例:
阵列方案:
array
[0] = animal
count->1
name->tiger
[1] = animal
count->3
name->lion
[2] = animal
count->4
name->monkey
[3] = animal
count->2
name->elephant
所需结果降序:
array
[2] = animal
count->4
name->monkey
[1] = animal
count->3
name->lion
[3] = animal
count->2
name->elephant
[0] = animal
count->1
name->tiger
任何人都可以比这更好吗?或者可能改进它?
function order_by_count($animals){
$animals_order = array();
foreach($animals as $key => $animal){
$animals_order[$key] = $animal->count;
}
natsort($animals_order);
$master_animals_order = array_reverse(array_keys($animals_order));
$revised_animals = array();
foreach($master_animals_order as $key){
$animal = $animals[$key];
$revised_animals[] = $animal;
}
return $revised_animals;
}
答案 0 :(得分:3)
用户usort。
function animal_compare_function($v1, $v2) {
if ($v1->count == $v2->count) return 0;
return ($v1->count < $v2->count) ? 1 : -1; // note -1 and 1 are reversed since we're sorting descending.
}
function order_by_count($animals) {
usort($animals, 'animal_compare_function');
return $animals;
}