Question

所以我有这2个数组。第一个包含一个数组，另一个包含两个数组。结果，它们像这样分组。

array(1) {
  [0]=>
  array(9) {
    ["id"]=>
    int(9)
    ["product_group_id"]=>
    int(9)
    ["sold_to"]=>
    int(107824)
    ["value"]=>
    int(19845)
    ["created_at"]=>
    string(19) "2019-01-24 14:48:25"
    ["updated_at"]=>
    string(19) "2019-01-24 14:48:25"
  }
}
array(2) {
  [0]=>
  array(9) {
    ["id"]=>
    int(17)
    ["product_group_id"]=>
    int(8)
    ["sold_to"]=>
    int(126124)
    ["value"]=>
    int(15555)
    ["created_at"]=>
    string(19) "2019-01-24 14:48:25"
    ["updated_at"]=>
    string(19) "2019-01-24 14:48:25"
  }
  [1]=>
  array(9) {
    ["id"]=>
    int(20)
    ["product_group_id"]=>
    int(8)
    ["sold_to"]=>
    int(141877)
    ["value"]=>
    int(10848)
    ["created_at"]=>
    string(19) "2019-01-24 14:48:25"
    ["updated_at"]=>
    string(19) "2019-01-24 14:48:25"
  }
}

我想基于product_group_id将第二个数组合并为一个数组

['id'=>“ 17,20”，'product_group_id'=>“ 9”，'sold_to'=>“ 107824,126124”]

Answer 1

尝试一下：下面的测试用例

function groupImplode( $key, $array, $glue = ',' ){
    $result = [];
    foreach( $array as $index => $element ){
        if( array_key_exists( $key, $element ) ){
            if( isset( $result[ $element[$key] ] ) ){
                //concat values
                foreach( array_keys( $element ) as $elementKey ){
                    if( $elementKey !== $key )
                        $result[ $element[$key] ][ $elementKey ] .= $glue . $element[$elementKey];
                }
            }else
                $result[ $element[$key] ] = $element;
        }
    }
    return array_values( $result );
}

$myArray = [
    ['id' => 17, 'product_group_id' => 8, 'sold_to' => 126124, 'value' => 15555, 'created_at' => '2019-01-24 14:48:25', 'updated_at' => '2019-01-24 14:48:25' ],
    ['id' => 20, 'product_group_id' => 8, 'sold_to' => 141877, 'value' => 10848, 'created_at' => '2019-01-24 14:48:25', 'updated_at' => '2019-01-24 14:48:25' ],
];

$res = groupImplode( 'product_group_id', $myArray );
print_r($res);

Answer 2

在“ product_group_id”上构建关联数组，然后使用array_values重置键。

foreach($arr as $sub){
    foreach($sub as $item){
        $new[$item["product_group_id"]][] = $item;
    }
}
$new = array_values($new);

通过PHP中两个重复的值组合两个数组，并合并值-以逗号分隔

2 个答案: