[英]Sort multidimensional associative array in PHP
我正在嘗試按分數對以下數組進行排序
$questionsets = array(
"A" => array("category" => "Some Category A", "score" => 0),
"B" => array("category" => "Some Category B", "score" => 29),
"C" => array("category" => "Some Category C", "score" => 12),
"D" => array("category" => "Some Category D", "score" => 88),
"E" => array("category" => "Some Category E", "score" => 4),
"F" => array("category" => "Some Category F", "score" => 22),
"G" => array("category" => "Some Category G", "score" => 20),
"H" => array("category" => "Some Category H", "score" => 40),
"I" => array("category" => "Some Category I", "score" => 42)
);
$questionsets = array_msort($questionsets, array('score'=>SORT_DESC));
這是行不通的,並且我找不到任何有幫助的文檔或示例。 我試過使用array_multisort()
和usort()
但沒有成功。
用score
按降序對該數組排序的干凈方法是什么?
如果您只對一個維度感興趣,則無需使用多分類。 而是按分數降序排序:
usort($questionsets,function($a,$b){return $b['score']-$a['score'];});
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