使用其中一個值對多維數組進行排序，同時遵守其順序php

Question

我有這個數組，它已經按'name'ASC排序。

array 
    0 => 
    array 
     'id' => '4' 
     'name' => 'iPad' 
     'games' => 5 
    1 => 
    array 
     'id' => '5' 
     'name' => 'iPhone' 
     'games' => 5 
    2 => 
    array 
     'id' => '6' 
     'name' => 'Nintendo DS' 
     'games' => 5 
    3 => 
    array 
     'id' => '1' 
     'name' => 'Playstation 2' 
     'games' => 2 
    4 => 
    array 
     'id' => '7' 
     'name' => 'Playstation 3' 
     'games' => 2 
    5 => 
    array 
     'id' => '7' 
     'name' => 'Xbox 360' 
     'games' => 1 

如果'遊戲'的值相同，我想按'遊戲'的值排序，同時尊重排序'名稱'的順序。

結果應該是這樣的：

array 
    0 => 
    array 
     'id' => '7' 
     'name' => 'Xbox 360' 
     'games' => 1 
    1 => 
    array 
     'id' => '1' 
     'name' => 'Playstation 2' 
     'games' => 2 
    2 => 
    array 
     'id' => '7' 
     'name' => 'Playstation 3' 
     'games' => 2 
    3 => 
    array 
     'id' => '4' 
     'name' => 'iPad' 
     'games' => 5 
    4 => 
    array 
     'id' => '5' 
     'name' => 'iPhone' 
     'games' => 5 
    5 => 
    array 
     'id' => '6' 
     'name' => 'iPod Touch' 
     'games' => 5 

我幾乎嘗試了所有種類的功能和用戶自定義的比較函數，但找不到合適的人。

如果可能的話，如果我想要'遊戲'DESC，並且如果遊戲的價值是相同的，那麼在維護排序後的'名稱'ASC時該如何處理呢？例如：

array 
    0 => 
    array 
     'id' => '6' 
     'name' => 'Nintendo DS' 
     'games' => 5 
    1 => 
    array 
     'id' => '5' 
     'name' => 'iPhone' 
     'games' => 5 
    2 => 
    array 
     'id' => '4' 
     'name' => 'iPad' 
     'games' => 5 
    3 => 
    array 
     'id' => '1' 
     'name' => 'Playstation 2' 
     'games' => 2 
    4 => 
    array 
     'id' => '7' 
     'name' => 'Playstation 3' 
     'games' => 2 
    5 => 
    array 
     'id' => '7' 
     'name' => 'Xbox 360' 
     'games' => 1 

Answer 1

usort($array, function ($a, $b) { 
    if ($a['games'] == $b['games']) { 
     return strcmp($a['name'], $b['name']); 
    } else { 
     return $a['games'] - $b['games']; 
    } 
}); 

Answer 2

有使用自定義的比較函數的其它方法，但是最簡單的方法是用array_multisort。

首先使用您想要對數組進行排序的鍵創建數組。然後將這些陣列的排序參數提供給array_multisort。

// first collect the sorting keys 
// ensure that $thearray[$n]['key'] corresponds to $sortkey[$n] 
$games = array(); 
$name = array(); 
foreach ($thearray as $item) { 
    $games = $item['games']; 
    $name = $item['name']; 
} 

// now sort 
array_multisort($games, SORT_NUMERIC, SORT_ASC, 
       $name, SORT_STRING, SORT_ASC, 
       $thearray); 
// $thearray is now sorted first by games, then by name.