[英]How to sort an array in php based on contained associated array?
我有一個關聯數組的數組:
a[0] = array("value" => "fred", "score" => 10);
a[1] = array("value" => "john", "score" => 50);
a[2] = array("value" => "paul", "score" => 5);
我想根據關聯數組的“得分”值對我的“ a”數組進行排序
它將變成:
a[0] = array("value" => "paul", "score" => 5);
a[1] = array("value" => "fred", "score" => 10);
a[2] = array("value" => "john", "score" => 50);
有人可以幫幫我嗎?
您需要使用usort和比較功能。
就像是:
function cmp($a, $b)
{
if ($a['score'] == $b['score']) {
return 0;
}
return ($a['score'] < $b['score']) ? -1 : 1;
}
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