Question

这是我的数组。（例如这个数组）

Array(
        [0] => Array
            (
                [amt] => 50.00
                [transaction_date] => 2015-01-01
            )  
        [1] => Array
            (
                [amt] => 0.00
                [transaction_date] => 2015-02-01
            )

        [2] => Array
            (
                [amt] => 60.00
                [transaction_date] => 2015-01-01
            )
    )

我正在尝试根据date.transaction日期对数组进行排序或分组应该是一个意味着数组中没有重复的事务条目。我希望这个数组也应该按日期排序。应该首先考虑2015-01-01如果日期可用，则在2015-01-01旁边进行2015-02-01等等。

我想要新的数组如下

Array(
            [0] => Array
                (
                    [amt] => 110.00
                    [transaction_date] => 2015-01-01
                )

            [1] => Array
                (
                    [amt] => 0.00
                    [transaction_date] => 2015-02-01
                )            

        )

2015-01-01此日期在阵列中出现2次，每次重复应添加2个不同金额。金额应为110

我试过了

$result = array();
foreach ($output as $key => $value) {
    $hash = $value['transaction_date'];
    if (isset($result[$hash])) {
        $result[$hash]['amt'] += $value['amt'];
        $result[$hash]['transaction_date'] = $value['transaction_date'];
    } else {
        $result[$hash]['amt'] = $value['amt'];
        $result[$hash]['transaction_date'] = $value['transaction_date'];
    }
}
print_r(array_values($result));

这是我实际的json编码结果

{"2015-07-18":{"amt":50,"transaction_date":"2015-07-18"},"2015-05-28":{"amt":"450.00","transaction_date":"2015-05-28"},"2015-06-02":{"amt":"200.00","transaction_date":"2015-06-02"},"2015-06-18":{"amt":"12610.00","transaction_date":"2015-06-18"},"2015-06-23":{"amt":"0.00","transaction_date":"2015-06-23"},"2015-06-24":{"amt":"603.00","transaction_date":"2015-06-24"},"2015-07-14":{"amt":"0.00","transaction_date":"2015-07-14"},"2015-07-16":{"amt":"0.00","transaction_date":"2015-07-16"},"2015-07-17":{"amt":"0.00","transaction_date":"2015-07-17"}}

您可以在此链接中查看此arrray http://jsonviewer.stack.hu/

Answer 1

尝试使用usort作为

$result = array();
foreach ($output as $key => $value) {
    $hash = $value['transaction_date'];
    if (isset($result[$hash])) {
        $result[$hash]['amt'] += $value['amt'];
        $result[$hash]['transaction_date'] = $value['transaction_date'];
    } else {
        $result[$hash]['amt'] = $value['amt'];
        $result[$hash]['transaction_date'] = $value['transaction_date'];
    }
}

uasort(array_values($result),function($a,$b){
     return $a['transaction_date'] - $b['transaction_date'];
});
print_r(array_values($result));

Demo

简单的日期明智排序数组不工作

1 个答案: