PHP 如果对象在数组中具有相同的键，同时携带剩余数据不变，则求和值

Question

Note: The following question is similar to this question, but I need more context for my answer.

我有一个像

这样的数组

Array
(
    [0] => Array
        (
            [tax_name] => VAT
            [tax_amount] => 3.000
            [tax_type] => P
            [tax_price] => 15.44
            [price_includes_tax] => Y
        )

    [1] => Array
        (
            [tax_name] => VAT
            [tax_amount] => 3.000
            [tax_type] => P
            [tax_price] => 59.68
            [price_includes_tax] => Y
        )

    [2] => Array
        (
            [tax_name] => VAT
            [tax_amount] => 3.000
            [tax_type] => P
            [tax_price] => 1.86
            [price_includes_tax] => Y
        )

    [3] => Array
        (
            [tax_name] => GST
            [tax_amount] => 3.300
            [tax_type] => P
            [tax_price] => 2.11
            [price_includes_tax] => N
        )

)

我想要这样的输出

Array
(
    [0] => Array
        (
            [tax_name] => VAT
            [tax_amount] => 3.000
            [tax_type] => P
            [tax_price] => 76.98
            [price_includes_tax] => Y
        )

    [1] => Array
        (
            [tax_name] => GST
            [tax_amount] => 3.300
            [tax_type] => P
            [tax_price] => 2.11
            [price_includes_tax] => N
        )

)

下面的代码部分解决了我的问题

$result = [];

    array_walk($_tax_array, function($item) use (&$result) {
        if (!isset($result[$item['tax_name']])) {
            $result[$item['tax_name']] = 0;
        }

        $result[$item['tax_name']] += $item['tax_price'];
    });
    
    $resultFormated = [];
    foreach ($result as $key => $value) {
        $resultFormated[] = ['tax_name' => $key, 'tax_price' => $value];
    }

    print_r($resultFormated);

如果我运行这段代码，我得到的输出是

Array
(
    [0] => Array
        (
            [tax_name] => VAT
            [tax_price] => 76.98
        )

    [1] => Array
        (
            [tax_name] => GST
            [tax_price] => 2.11
        )

)

我的问题是我不知道如何在不影响结果的情况下携带 tax_amount、tax_type 和 price_includes_tax 等剩余数据。

Answer 1

经过一段时间的尝试，我终于找到了答案。答案在这里

$tax_array = array();
foreach ($_tax_array as $array) {
$type= false;
foreach ($tax_array as $pos => $temp_array) {
    if(
        $temp_array['tax_name'] == $array['tax_name']){
        $tax_array[$pos]['tax_price'] += $array['tax_price'];
        $type= true;
    }
}
if(!$type) {
    $tax_array[] = array(
        'tax_name' => $array['tax_name'], 
        'tax_type' => $array['tax_type'], 
        'tax_price' => $array['tax_price'],
        'tax_amount' => $array['tax_amount'],
        'price_includes_tax' => $array['price_includes_tax'],
        );
    }
}
print_r($tax_array);

这段代码解决了我的问题。此代码输出

Array
(
    [0] => Array
        (
            [tax_name] => VAT
            [tax_type] => P
            [tax_price] => 76.98
            [tax_amount] => 3.000
            [price_includes_tax] => Y
        )

    [1] => Array
        (
            [tax_name] => GST
            [tax_type] => P
            [tax_price] => 2.11
            [tax_amount] => 3.300
            [price_includes_tax] => N
        )

PHP 如果对象在数组中具有相同的键，同时携带剩余数据不变，则求和值

PHP Sum values if the object has the same key in a array whilst carrying the remaining data unchanged

php

arrays

arraylist