PHP 计算对象属性出现次数

Question

我有一个如下所示的 PHP 对象，我想知道获取属性“typeId”= 3 的对象计数的最简单方法是什么

Array
(
    [0] => ABC Object
        (
            [id] => 13
            [typeId] => 3
            [sortOrder] => 0
        )
    [1] => ABC Object
        (
            [id] => 12
            [typeId] => 2
            [sortOrder] => 0
        )
    [2] => ABC Object
        (
            [id] => 14
            [typeId] => 4
            [sortOrder] => 0
        )
    [3] => ABC Object
        (
            [id] => 15
            [typeId] => 3
            [sortOrder] => 0
        )
)

Answer 1

一个简单的 foreach 计数器应该可以做到:

$count = 0;
foreach ($array as $object) {
    if ($object->typeId == 3) $count++;
}

没必要把事情搞得太复杂