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求多维数组里的最大值

WBOY
Release: 2016-06-23 13:30:39
Original
1821 people have browsed it

数组是这样的:
Array
(
    [0] => Array
        (
            [CampaignID] => 2304111
            [ExistStatus] => 2
            [CampaignName] => 7月促销中心
            [CampaignType] => 定向推广计划
            [AvgCommission] => 1.71 %
            [Exist] => 1
            [ShopKeeperID] => 18791530
            [Properties] => 否
        )

    [1] => Array
        (
            [CampaignID] => 2979322
            [CampaignName] => 新年 促销价
            [CampaignType] => 定向推广计划
            [AvgCommission] => 4.90 %
            [Exist] => 
            [ShopKeeperID] => 18791530
            [Properties] => 否
        )

    [2] => Array
        (
            [CampaignID] => 7275933
            [CampaignName] => 感恩
            [CampaignType] => 定向推广计划
            [AvgCommission] => 1.53 %
            [Exist] => 
            [ShopKeeperID] => 18791530
            [Properties] => 否
        )

)

找出AvgCommission为最大值的,同时还要带上CampaignID
 
让结果显示为array(2979322,4.9);

我算法太差了,找了好多都看不明白!!!


回复讨论(解决方案)

foreach($arr as $v) $r[] = $v['AvgCommission'];array_multisort($r, SORT_DESC, SORT_NUMERIC, $arr);$r = array($arr[0]['CampaignID'], $arr[0]['AvgCommission'] + 0);print_r($r);
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你就是额的神

那也未必,这样的代码组合是定式,多接触就熟练了

如果是数据库查询,那么
SELECT CampaignID, AvgCommission FROM tbl_name ORDER BY AvgCommission DESC
你一定不陌生

其实他们是一一对应的

谢谢神,感觉明白了些了!

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