对 foreach 中数组中的项目进行分组和求和

Question

我正在遍历两个存储过程的结果集，根据另一个存储过程中的字段在一个存储过程中获取结果。

包含结果集的两个数组是$customers 和$subcustomers。

foreach($customers as $customer)
{
      foreach($subcustomers as $subcustomer)
      {
            if($subcustomer['parent'] == $customer['id'])
            {                        
                  if($customer['innumber'] == null && $subcustomer['innumber'] != null)
                  {                       
                      $chartInboundSub['name'] = $customer['name'];
                      $chartInboundSub['label'] = $subcustomer['innumber'];
                      $chartInboundSub['countInbound'] = $customer['count'];
                      $chartInboundSub['minsInbound'] = ceil($customer['duration'] / 60);
                      $chartInboundSub['customerid'] = $customer['id'];

                      array_push($out['chartInbound'], $chartInboundSub);
                  }
            }
       }
}

print_r($out['chartInbound'])的当前输出如下：

Array
(
    [0] => Array
        (
            [countInbound] => 426
            [minsInbound] => 340
            [name] => Telekomm
            [label] => 01-02
            [customerid] => 6
        )

    [1] => Array
        (
            [countInbound] => 1
            [minsInbound] => 2
            [name] => Telekomm
            [label] => 01-02
            [customerid] => 6
        )

    [2] => Array
        (
            [countInbound] => 3
            [minsInbound] => 21
            [name] => Telekomm
            [label] => 080
            [customerid] => 6
        )

    [3] => Array
        (
            [countInbound] => 1920
            [minsInbound] => 15766
            [name] => Telekomm
            [label] => 084
            [customerid] => 6
        )

    [4] => Array
        (
            [countInbound] => 2332
            [minsInbound] => 17521
            [name] => Telekomm
            [label] => 084
            [customerid] => 6
        )
    ...
)

以上结果需要name、label、customerid与countInbound和minsInbound相加，所以：

期望的输出应该是：

Array
    (
        [0] => Array
            (
                [countInbound] => 427
                [minsInbound] => 342
                [name] => Telekomm
                [label] => 01-02
                [customerid] => 6
            )

        [1] => Array
            (
                [countInbound] => 3
                [minsInbound] => 21
                [name] => Telekomm
                [label] => 080
                [customerid] => 6
            )

        [2] => Array
            (
                [countInbound] => 4252
                [minsInbound] => 33287
                [name] => Telekomm
                [label] => 084
                [customerid] => 6
            )
        ...
    )

Answer 1

我认为这应该可行。我没有测试过代码，所以我不做任何承诺。

$map = array();
$i = 0;

foreach($customers as $customer)
{
      foreach($subcustomers as $subcustomer)
      {
            if($subcustomer['parent'] == $customer['id'])
            {                        
                  if($customer['innumber'] == null && $subcustomer['innumber'] != null)
                  {                       

                      $key = $customer['name'] . '/' . $subcustomer['innumber'] . '/' . $customer['id'];

                      if(isset($map[$key])) {
                            $out['chartInbound'][$map[$key]]['countInbound'] += $customer['count'];
                            $out['chartInbound'][$map[$key]]['minsInbound'] += ceil($customer['duration'] / 60);
                      }
                      else {
                          $out['chartInbound'][$i] = array(
                                  'name' => $customer['name'],
                                  'label' => $subcustomer['innumber'],
                                  'countInbound' => $customer['count'],
                                  'minsInbound' => ceil($customer['duration'] / 60),
                                  'customerid' => $customer['id'],
                          );
                          $map[$key] = $i++;
                    }
                  }
            }
       }
}

对于name、label 和customerid 的每个组合，它都会创建一个对于该组合​​而言必须是唯一的字符串键。然后它检查该键是否已经有任何数据（通过在$out['chartInbound'] 中保留一个单独的键列表及其索引）。如果是这样，它只需添加countInbound 和minsInbound。如果不是，它会将整个 $chartInboundSub 放入 $out['chartInbound']。

请注意，这依赖于唯一的密钥。例如，如果您在名称中允许 /，则可能并非如此。

Answer 2

我没有使用foreach 循环，而是使用每个PHP 数组都有的“迭代器”。

假设数组已排序，那么单次记录“当前组 id”就足够了。

我使用“预读”技术，因此不需要进行“if”测试来找出如何处理“当前记录”。

working code as 'eval.in'

代码：

/**
 * Output stored in here...
 */
$output = array();

// groupId consists of:   name, label, customerid

// read ahead - we need the current entry of the source array...
$currentEntry = current($source);

while ($currentEntry !== false) { // process the array / file / resultset etc.

    // start of a group... process the first record that every group has...
    $currentGroupId = getGroupId($currentEntry);
    $currentGroupCountInbound = $currentEntry['countInbound'];
    $currentGroupMinsInbound = $currentEntry['minsInbound'];

    // read the next record as we always 'read ahead' after processing a record...
    next($source);
    $currentEntry = current($source);

     while ($currentGroupId == getGroupId($currentEntry)) {
        // same group = total the values...

       $currentGroupCountInbound += $currentEntry['countInbound'];
       $currentGroupMinsInbound += $currentEntry['minsInbound'];

       // next entry in the input array - will end this group if not the same...
       next($source);
       $currentEntry = current($source);
    }

    // end of the current group -- output the information...
    // add it to an array... or whatever...
    $output[] = array('groupid' => $currentGroupId,
                       'countInbound' => $currentGroupCountInbound,
                       'minsInbound' => $currentGroupMinsInbound);
}

// show the output...
echo '<pre>';
print_r($output);
echo '</pre>';
exit;

// ---------------------------------
function getGroupId($entry = array())
{
    if (empty($entry)) {
        return array();
    }

    return array(
        $entry['name'], $entry['label'], $entry['customerid']
    );
}

输出：

Array(
    [0] => Array(
            [groupid] => Array(
                    [0] => Telekomm
                    [1] => 01-02
                    [2] => 6
                )
            [countInbound] => 427
            [minsInbound] => 342
        )

    [1] => Array(
            [groupid] => Array(
                    [0] => Telekomm
                    [1] => 080
                    [2] => 6
                )
            [countInbound] => 3
            [minsInbound] => 21
        )

    [2] => Array(
            [groupid] => Array(
                    [0] => Telekomm
                    [1] => 084
                    [2] => 6
                )
            [countInbound] => 4252
            [minsInbound] => 33287
        )
)