訂購一個數組持有對象的數據對象

Question

我試圖找到一個深刻的對象項目排序一個陣列的有效方式，這裏是例子：

陣列方案：

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 

所需的結果降序：

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 

任何人都可以做得比這更好嗎？或者可能改進它？

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; 
} 

Answer 1

用戶。

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; 
}