对foreach内数组中的项进行分组和求和


Group and sum items from array within foreach

我循环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程序中获得结果。

包含结果集的两个数组是$customers$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'])的电流输出如下:

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
        )
    ...
)

上述结果需要按namelabelcustomerid分组,countInboundminsInbound相加,因此:

所需输出应为:

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
            )
        ...
    )

我认为这应该有效。我还没有测试过代码,所以我没有做出任何承诺。

$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namelabelcustomerid的每一个组合,它都会创建一个字符串键,该键对于该组合必须是唯一的。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及其索引列表)。如果是这样的话,它只是将countInboundminsInbound相加。如果不是,则将整个CCD_ 15放入CCD_。

请注意,这取决于密钥的唯一性。例如,如果您允许在名称中使用/,则情况可能并非如此。

我不使用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,则记录"当前组id"的单程操作就足够了。

我使用了一种"预读"技术,因此不需要进行"f"测试来找出如何处理"当前记录"。

工作代码为"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
        )
)