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PHP多维数组如果两个项匹配,则将相应的项相加并返回新数组_Php_Arrays_Sorting_Multidimensional Array - Fatal编程技术网

PHP多维数组如果两个项匹配,则将相应的项相加并返回新数组

PHP多维数组如果两个项匹配,则将相应的项相加并返回新数组,php,arrays,sorting,multidimensional-array,Php,Arrays,Sorting,Multidimensional Array,我有一个数组,返回如下: array(5) { [0]=> array(2) { ["order_id"]=> string(3) "257" ["price"]=> string(7) "20.3600" } [1]=> array(2) { ["order_id"]=> string(3) "256" ["price"]=> string(7) "20.5500" }

我有一个数组,返回如下:

array(5) {
  [0]=>
  array(2) {
    ["order_id"]=>
    string(3) "257"
    ["price"]=>
    string(7) "20.3600"
  }
  [1]=>
  array(2) {
    ["order_id"]=>
    string(3) "256"
    ["price"]=>
    string(7) "20.5500"
  }
  [2]=>
  array(2) {
    ["order_id"]=>
    string(3) "255"
    ["price"]=>
    string(7) "30.0000"
  }
  [3]=>
  array(2) {
    ["order_id"]=>
    string(3) "255"
    ["price"]=>
    string(7) "22.3800"
  }
  [4]=>
  array(2) {
    ["order_id"]=>
    string(3) "254"
    ["price"]=>
    string(7) "20.6300"
  }
}
最后我想说的是:

array(4) {
  [0]=>
  array(2) {
    ["order_id"]=>
    string(3) "257"
    ["price"]=>
    string(7) "20.3600"
  }
  [1]=>
  array(2) {
    ["order_id"]=>
    string(3) "256"
    ["price"]=>
    string(7) "20.5500"
  }
  [2]=>
  array(2) {
    ["order_id"]=>
    string(3) "255"
    ["price"]=>
    string(7) "52.3800"
  }
  [3]=>
  array(2) {
    ["order_id"]=>
    string(3) "254"
    ["price"]=>
    string(7) "20.6300"
  }
}
逻辑是,如果数组包含匹配的订单号,则将这些订单号的价格相加,并返回一个新数组,其中包含唯一的订单id和添加的价格if以及一个订单id

因此,在本例中,由于有两个订单号为255的订单号,其价格分别为22.38和30,因此新数组中的订单号为255的订单号应该只有一个项目,相关价格为52.38

目前,我已经能够使用此函数仅返回唯一ID:

        function super_unique($array,$key) {
            $temp_array = array();
            foreach ($array as &$v) {
                if (!isset($temp_array[$v[$key]]))
                    $temp_array[$v[$key]] =& $v;
            }
            $array = array_values($temp_array);

            return $array;
        }
为了将价格相加,我尝试了类似的方法,但是我得到了操作数错误:

       function super_unique_addition($array,$key,$total) {
        $temp_array = array();
        foreach ($array as &$v) {
            if (!isset($temp_array[$v[$key]])) {
                $temp_array[$v[$key]] =& $v;
                $temp_array[$v[$total]] += $v;
            }
        }
        $array = array_values($temp_array);

        return $array;
    }
非常感谢对此的任何见解!提前感谢您的帮助

只需按订单价格分组即可减少您的物品:

$newArray = array_reduce($array, function($memo, $item){

  $memo[$item['order_id']] += $item['price'];

}, [])
编辑:请注意,您可以在查询时更好地对数据进行分组/求和。

可能:

<?php

$your_array = array( ... );

# Loop array
for( $i=0; $i<count($your_array); $i++ )
{
    # Loop array again for each item in it
    for( $j=0; $j<count($your_array; $j++) )
    {
        # If the order IDs are the same, add the prices and make the $j array values null
        if( $your_array[$i]["order_id"] === $your_array[$j]["order_id"] )
        {
            $your_array[$i]["price"] += $your_array[$j]["price"];

            $your_array[$j]["order_id"] = null;
            $your_array[$j]["price"]    = null;
        }
    }
}

# array_filter should remove the null values
$final_array = array_filter($your_array);

?>

您可以在这一个上使用普通的ol'foreach,并在一个新数组上构建它。考虑这个例子:

$values = array(
    0 => array('order_id' => '257', 'price' => '20.3600'),
    1 => array('order_id' => '256', 'price' => '20.5500'),
    2 => array('order_id' => '255', 'price' => '30.0000'),
    3 => array('order_id' => '255', 'price' => '22.3800'),
4 => array('order_id' => '254', 'price' => '20.6300'),
);

$new_values = array();
foreach($values as $key => $value) {
    $new_values[$value['order_id']]['order_id'] = $value['order_id'];
    // initialize price
    if(!isset($new_values[$value['order_id']]['price'])) $new_values[$value['order_id']]['price'] = 0;
    $new_values[$value['order_id']]['price'] += $value['price']; 
}

$new_values = array_values($new_values); // reindex the array
print_r($new_values); // print
$memo不太可能包含名为$item['order_id']的索引:
function _new_array()
{
   $temp1 = [];

   foreach (func_get_args() as $arg)
   {
       if (!is_array($arg)) continue;

       foreach ($arg as $val)
       {
           if (isset($temp1[$val['order_id']]))
              $temp1[$val['order_id']] += $val['price'];

           else
              $temp1[$val['order_id']] = $val['price'];
       }
   }

   $result = [];

   foreach ($temp1 as $k => $v) $result[] = ['order_id' => $k, 'price' => $v];

   return $result;
}

$result = _new_array($array1, $array2, $array3);