php - PHP 中的多维数组计数

Question

我有一个多维数组设置如下

array() {
    ["type1"] =>
    array() {
        ["ticket1"] =>
        array(9) { 
           // ticket details here
        }
        ["ticket2"] =>
        array(10) { 
           // ticket details here
        }
        ["ticket3"] =>
        array(9) { 
           // ticket details here
        }
    }
    ["type2"] =>
    array() {
        ["ticket1"] =>
        array(9) { 
           // ticket details here
        }
        ["ticket2"] =>
        array(10) { 
           // ticket details here
        }
        ["ticket3"] =>
        array(9) { 
           // ticket details here
        }
    }
}

等等

我正在尝试计算数组中票的总数(二级项目的数量)，但是类型的数量是可变的，每张票的字段数量也是可变的，所以我不能使用 COUNT_RECURSIVE和数学来得到这个数字。

谁能帮帮我？

Answer 1

有点晚了，但这是一种干净的编写方式。

$totalTickets = array_sum(array_map("count", $tickets));

假设 $tickets 是您的多维数组。

因为 array_map，我扩展了代码以给出一个解释示例对某些人来说可能是新的

$tickets = array(
    "type1" => array(
        "ticket1" => array(),
        "ticket2" => array(),
        "ticket3" => array(),
    ),
    "type2" => array(
        "ticket4" => array(),
        "ticket5" => array(),
        "ticket6" => array(),
        "ticket7" => array(),
    ),
    "type3" => array(
        "ticket8" => array()
    )
);

// First we map count over every first level item in the array
// giving us the total number of tickets for each type.
$typeTotals = array_map("count", $tickets);

// print_r($typeTotals);
// $type_totals --> Array (
//                       [type1] => 3,
//                       [type2] => 4,
//                       [type3] => 1 
//                  )

//Then we sum the values of each of these
$totalTickets = array_sum($typeTotals);

print($totalTickets);
// $totalTickets --> 8

因为我们不关心每种类型的中间结果，所以我们可以将结果输入 array_sum

$totalTickets = array_sum(array_map("count", $tickets));