排序由遞減和b ASC - 陣列（密鑰=>陣列（A，B）

Question

我有一個數組這樣的：

$array = array($team => array('points' => x, 'runs' => y)) 

我聚集點，並與同一個隊中運行，其結果是這樣的事情：

[team1] => Array 
    (
     [points] => 12 
     [runs] => 1 
    ) 

[team2] => Array 
    (
     [points] => 11 
     [runs] => 3 
    ) 

[team3] => Array 
    (
     [points] => 11 
     [runs] => 2 
    ) 

[team4] => Array 
    (
     [points] => 8 
     [runs] => 3 
    ) 

而且我想通過運行DESC和ASC點排序它 是這樣的：

[team4] => Array 
    (
     [points] => 8 
     [runs] => 3 
    ) 
[team2] => Array 
    (
     [points] => 11 
     [runs] => 3 
    ) 
[team3] => Array 
    (
     [points] => 11 
     [runs] => 2 
    ) 
[team1] => Array 
    (
     [points] => 12 
     [runs] => 1 
    ) 

Answer 1

你可以ü SE uasort（保持完整的鍵，你可以使用usort否則）用自定義比較函數：

uasort($teamArray, function($first, $second) { 
    // first preference to points 
    if ($first['points'] < $second['points']) return -1; 
    if ($first['points'] > $second['points']) return 1; 

    // points are equal, compare runs in descending order 
    if ($first['runs'] > $second['runs']) return -1; 
    if ($first['runs'] < $second['runs']) return 1; 

    // both points and runs are equal 
    return 0; 
}); 

print_r($teamArray);