排序的對象數組

Question

我這個讀了幾個不同的主題（like this one和一般的文檔信息有關uasort() - 我相信這是我要找的），但陣列仍然是一個有點固執（在我的用例中）。

這是我有：

// This sets an array of values to a variable 
$collection_rows = get_field('collection_profiles'); 

這是print_r$collection_rows的：

Array 
(
    [0] => Array 
     (
      [collection_profile] => Array 
       (
        [0] => stdClass Object 
         (
          [ID] => 273 
          [post_author] => 1 
          [post_date] => 2012-03-26 07:53:45 
          [post_date_gmt] => 2012-03-26 13:53:45 
          [post_content] => 
          [post_title] => Profile 1 
          [post_excerpt] => 
          [post_status] => publish 
          [comment_status] => closed 
          [ping_status] => closed 
          [post_password] => 
          [post_name] => profile-1 
          [to_ping] => 
          [pinged] => 
          [post_modified] => 2012-04-12 08:07:35 
          [post_modified_gmt] => 2012-04-12 14:07:35 
          [post_content_filtered] => 
          [post_parent] => 0 
          [guid] => http://domain.com/?post_type=moulding_profiles&p=273 
          [menu_order] => 0 
          [post_type] => moulding_profiles 
          [post_mime_type] => 
          [comment_count] => 0 
          [ancestors] => Array 
           (
           ) 

          [filter] => raw 
         ) 

       ) 

      [collection_profile_note] => 1 
     ) 

    [1] => Array 
     (
      [collection_profile] => Array 
       (
        [0] => stdClass Object 
         (
          [ID] => 188 
          [post_author] => 1 
          [post_date] => 2012-02-17 15:24:24 
          [post_date_gmt] => 2012-02-17 21:24:24 
          [post_content] => 
          [post_title] => Test Profile 
          [post_excerpt] => 
          [post_status] => publish 
          [comment_status] => closed 
          [ping_status] => closed 
          [post_password] => 
          [post_name] => test-profile 
          [to_ping] => 
          [pinged] => 
          [post_modified] => 2012-02-28 14:13:32 
          [post_modified_gmt] => 2012-02-28 20:13:32 
          [post_content_filtered] => 
          [post_parent] => 0 
          [guid] => http://domain.com/?post_type=moulding_profiles&p=188 
          [menu_order] => 0 
          [post_type] => moulding_profiles 
          [post_mime_type] => 
          [comment_count] => 0 
          [ancestors] => Array 
           (
           ) 

          [filter] => raw 
         ) 

       ) 

      [collection_profile_note] => 3 
     ) 

    [2] => Array 
     (
      [collection_profile] => Array 
       (
        [0] => stdClass Object 
         (
          [ID] => 207 
          [post_author] => 1 
          [post_date] => 2012-02-23 13:35:55 
          [post_date_gmt] => 2012-02-23 19:35:55 
          [post_content] => 
          [post_title] => Casing Test Profile 
          [post_excerpt] => 
          [post_status] => publish 
          [comment_status] => closed 
          [ping_status] => closed 
          [post_password] => 
          [post_name] => casing-test-profile 
          [to_ping] => 
          [pinged] => 
          [post_modified] => 2012-02-23 13:35:55 
          [post_modified_gmt] => 2012-02-23 19:35:55 
          [post_content_filtered] => 
          [post_parent] => 0 
          [guid] => http://domain.com/?post_type=moulding_profiles&p=207 
          [menu_order] => 0 
          [post_type] => moulding_profiles 
          [post_mime_type] => 
          [comment_count] => 0 
          [ancestors] => Array 
           (
           ) 

          [filter] => raw 
         ) 

       ) 

      [collection_profile_note] => 2 
     ) 

) 

（相當doozey）

我正在尋找一個由數組鍵排序/值爲collection_profile_note。我已經試過（到這點）：

$collection_rows = get_field('collection_profiles'); 
print_r($collection_rows); 
if ($collection_rows) { 
    echo '<h2>'.__('Profiles in Collection','roots').'</h2>'; 
    echo '<ul>'; 
    function cmp($a, $b) { 
     if ($a->collection_profile_note == $b->collection_profile_note) { 
      return 0; 
     } else { 
      return $a->collection_profile_note < $b->collection_profile_note ? 1 : -1; 
     } 
    } 
    usort($collection_rows, 'cmp'); 

    foreach($collection_rows as $collection_row) { 
     // Extract single post value 
     $collection_profile_field = $collection_row['collection_profile']; 
     $collection_profile_page = isset($collection_profile_field[0]) ? $collection_profile_field[0]->ID : NULL; 
     ?> 
     <li><a href="<?php echo get_permalink($collection_profile_page); ?>"><?php echo get_the_title($collection_profile_page); ?></a> <?php echo $collection_row['collection_profile_note']; ?></li> 
    <?php } 
    echo '</ul>'; 
} 

，雖然它確實改變從所顯示內容的順序沒有uasort()它沒有命令他們怎麼想 - >使用功能（ 2，3，1），無功能（1，3，2）

任何幫助將不勝感激。謝謝！

Answer 1

嗯，你實現了排序邏輯倒退：

function cmp($a, $b) { 
    if ($a->collection_profile_note == $b->collection_profile_note) { 
     return 0; 
    } else { 
     return $a->collection_profile_note < $b->collection_profile_note ? 1 : -1; 
    } 
} 

從documentation for uasort()：

function cmp($a, $b) { 
    if ($a == $b) { 
     return 0; 
    } 
    return ($a < $b) ? -1 : 1; 
} 

請注意，您在使用這種邏輯：

• 如果< b，返回1（實質上，告訴排序函數a> b）
• 如果A> B，則返回-1（在本質上，告訴排序功能，一個< B）

Answer 2

有必要爲您到位數組排序？這可能是更容易打出來的鍵和值你排序上，排序的，然後通過數組環（像這樣）：

$sortme=array(); 
foreach($collection_rows as $key=>$profile) 
{ 
    $sortme[$key] = $profile['collection_profile_note']; 
} 

asort($sortme); 

foreach($sortme as $node=>$ignore) 
{ 
    print_r($collection_rows[$node]); 
} 

承認這一點，幾乎是翻倍的分揀時間，但也許夠你需要嗎？