Question

我有一个数组数组，每个数组都包含三个参数，如下所示：

Array
(
    [0] => Array
    (
        [title] => 'games'
        [transaction_id] => 102
        [order_id]=> a
    )
    [1] => Array
    (
        [title] => 'media'
        [transaction_id] => 95
        [order_id]=> b
    )
    [2] => Array
    (
        [title] => 'tv'
        [transaction_id] => 102
        [order_id]=> a
    )
    [3] => Array
    (
        [title] => 'jane'
        [transaction_id] => 42
        [order_id]=> a
    )
    [4] => Array
    (
        [title] => 'ads'
        [transaction_id] => 95
        [order_id]=> b
    )
    [5] => Array
    (
        [title] => 'movie'
        [transaction_id] => 95
        [order_id]=> c
    )
)

我想组织数组，以便具有相同transaction_id值和order_id的每个数组都位于原始array(Multidimensional)中的新数组下，如下所示：

Array
(
    [0] => Array
    (
        [0] => games
        [1] => tv
    )
    [1] => Array
    (
        [0] => jane
    )
    [2] => Array
    (
        [0] => ads
        [1] => media
    )
    [3] => Array
    (
        [0] => movie
    )
)

这样做的好方法是什么？

我试过这个：

foreach ($conv_data as $obj) {
    if (empty($result[$obj[1]])) {
        $result[$obj[1]] = array($obj);
    } else {
        $result[$obj[1]][] = $obj;
    }
}

但这仅聚合在一个参数上。

Answer 1

使用事务ID和订单ID作为结果数组键来“合并”复制：

Online demo

$source=/* source array */;
function merge(array $source)
{
    $result=array();
    foreach($source as $node)
    {
        $key=$node["transaction_id"]."_".$node["order_id"];
        if(!empty($result[$key])) $result[$key][]=$node["title"];
        else $result[$key]=array($node["title"]);
    }
    return array_values($result);
}
print_r(merge($source));

最终结果：

Array
(
    [0] => Array
        (
            [0] => games
            [1] => tv
        )

    [1] => Array
        (
            [0] => media
            [1] => ads
        )

    [2] => Array
        (
            [0] => jane
        )

    [3] => Array
        (
            [0] => movie
        )

)

在返回之前，您可以uksort根据您的愿望（如果您关心它）。

Answer 2

$newarray = array();
foreach($arrays as $k=>$v){
    $newarray['transaction_id'] = $v['transaction_id'];
    $newarray['order_id'] = $v['order_id'];
    $newmulti[] = $newarray;
}
echo '<pre>';
print_r($newmulti);

我希望它可以帮到你

基于数组参数的聚合数组

2 个答案: