Question

我正在尝试计算多维数组中的嵌套元素。起初我以为我可以使用COUNT_RECURSIVE，但这算作一切。所以我尝试了两种不同的方法，它们都没有吸引我。有没有更好的方法呢？

$count = 0;
foreach ($topics as $t) {
    foreach ($t as $c) {
    $count++; 
    }
}
echo $count;

// or

echo (count($topics, COUNT_RECURSIVE)-count($topics));

Answer 1

function countNested($arr) {
    return (count($arr, COUNT_RECURSIVE) - count($arr));
}

Answer 2

我会写这段代码：

$count = 0;
foreach ($topics as $t) {
    $count+= count($t); 
}
echo $count;

Answer 3

//以下示例将计算一维或二维数组

$values_count = (count($values, COUNT_RECURSIVE) - count($values)?:count($values));

计算多维数组中的元素？

3 个答案: