Question

我有一个数组，我试图计算数组中对象键的数量，其中包含对象键＆＃39; Value＆＃39;不是0。

array (
  0 => 
  array (
    'name' => 'item[110189]',
    'value' => '0',
    'primary_key' => '110189',
  ),
  1 => 
  array (
    'name' => 'item[110190]',
    'value' => '50',
    'primary_key' => '110190',
  ),
  2 => 
  array (
    'name' => 'item[110191]',
    'value' => '0',
    'primary_key' => '110191',
  ),
  3 => 
  array (
    'name' => 'item[110192]',
    'value' => '0',
    'primary_key' => '110192',
  ),
)

我尝试过以下方法：

$input_items = array_filter($request->items, function($item){

            $count = 0;

            foreach($item as $i){
                if(! $i['value'] == 0){
                    $count = $count + 1;
                }
            }

            return $count;
        }); // it will return an array

        return $input_items;

我收到错误消息“无效对象＆＃39;价值＆＃39;说实话，我有一半的期待。

Answer 1

您可以使用print array_reduce($request->items, function($carry ,$item){ if($item['value'] != 0){ $carry++; } return $carry; },0);：

aProducts(lRow) = Array("Id Product", "Value A", "Value B", "Value C")

'To copy value A
aProducts(lRow) = Array(.Cells(aPos(1)).Value2, .Cells(aPos(2)).Value2, Empty, Empty)

'To copy value B
aProducts(lRow) = Array(.Cells(aPos(1)).Value2, Empty, .Cells(aPos(3)).Value2, Empty)

'To copy value C
aProducts(lRow) = Array(.Cells(aPos(1)).Value2, Empty, Empty, .Cells(aPos(4)).Value2)

Answer 2

以这种方式改变：

return JsonResponse(to_json, encoder=CustomEncoder)

完整代码

$input_items = array_filter($arr, function ($item) {
    return ($item['value'] != 0);
});

输出只有非零条目：

<?php
$arr = array (
  0 => 
  array (
    'name' => 'item[110189]',
    'value' => '0',
    'primary_key' => '110189',
  ),
  1 => 
  array (
    'name' => 'item[110190]',
    'value' => '50',
    'primary_key' => '110190',
  ),
  2 => 
  array (
    'name' => 'item[110191]',
    'value' => '0',
    'primary_key' => '110191',
  ),
  3 => 
  array (
    'name' => 'item[110192]',
    'value' => '0',
    'primary_key' => '110192',
  ),
);
$input_items = array_filter($arr, function ($item) {
    return ($item['value'] != 0);
});

print_r($input_items);

演示：http://ideone.com/LUbMSb

计算数组中不是0的值的数量

2 个答案: