获取数组值的数量是Powerwall

Question

以下是数组，如果product name是Powerwall，我想要数一数

Array
    (
        [0] => Array
            (
                [user] => 58cb6fb8bf3c3600043ec1f2
                [company] => tesla
                [product] => Array
                    (
                        [name] => Powerwall
                        [category] => product
                    )

            )

        [1] => Array
            (
                [user] => 58cb6fb8bf3c3600043ec1f2
                [company] => tesla
                [product] => Array
                    (
                        [name] => Powerwall
                        [category] => product
                    )

            )

        [2] => Array
            (
                [user] => 58cb6fb8bf3c3600043ec1f2
                [company] => tesla
                [product] => Array
                    (
                        [name] => Powerwall
                        [category] => product
                    )

            )

        [3] => Array
            (
                [user] => 58cb6fb8bf3c3600043ec1f2
                [company] => tesla
                [product] => Array
                    (
                        [name] => Powerwall
                        [category] => product
                    )

            )

        [4] => Array
            (
                [user] => 58cb6fb8bf3c3600043ec1f2
                [company] => tesla
                [product] => Array
                    (
                        [name] => Powerwall
                        [category] => product
                    )

            )

        [5] => Array
            (
                [user] => 58cb6fb8bf3c3600043ec1f2
                [company] => tesla
                [product] => Array
                    (
                        [name] => Powerwall
                        [category] => product
                    )

            )

        [6] => Array
            (
                [user] => 58cb6fb8bf3c3600043ec1f2
                [company] => tesla
                [product] => Array
                    (
                        [name] => Powerwall
                        [category] => product
                    )

            )

        [7] => Array
            (
                [user] => 58cb6fb8bf3c3600043ec1f2
                [company] => tesla
                [product] => Array
                    (
                        [name] => Powerwall
                        [category] => product
                    )

            )

        [8] => Array
            (
                [user] => 58cb6fb8bf3c3600043ec1f2
                [company] => tesla
                [product] => Array
                    (
                        [name] => Model S
                        [category] => product
                    )

            )

    )

需要输出8 for Powerwall and 1 for Model S

Answer 1

每次找到 Powerwall 时，您需要遍历数组并递增计数器$count。

$count = 0;
foreach ($array as $arr) {
    if ($arr['product']['name'] == 'Powerwall') {
        $count++;
    }
}
echo "Powerwall count = " . $count;

Answer 2

只需使用array_column和array_count_values来计算号码

Try this code snippet here

  <?php
 $dataarray=Array
    (
        0 => Array
            (
                "user" => "58cb6fb8bf3c3600043ec1f2",
                "company" => "tesla",
                "product" => Array
                    (
                        "name" => "Powerwall",
                        "category" => "product",
                    )

            ),

        1 => Array
            (
                "user" => "58cb6fb8bf3c3600043ec1f2",
                "company" => "tesla",
                "product" => array
                    (
                        "name" => "Powerwall",
                        "category" => "product",
                    )

            ),

        2 => array
            (
                "user" => "58cb6fb8bf3c3600043ec1f2",
                "company" => "tesla",
                "product" => array
                    (
                        "name" => "Powerwall",
                        "category" => "product",
                    )

            ),

        3 => array
            (
                "user" => "58cb6fb8bf3c3600043ec1f2",
                "company" => "tesla",
                "product" => array
                    (
                        "name" => "Powerwall",
                        "category" => "product",
                    )

            ),

        4 => array
            (
                "user" => "58cb6fb8bf3c3600043ec1f2",
                "company" => "tesla",
                "product" => array
                    (
                        "name" => "Powerwall",
                        "category" => "product",
                    )

            ),

        5 => array
            (
                "user" => "58cb6fb8bf3c3600043ec1f2",
                "company" => "tesla",
                "product" => array
                    (
                        "name" => "Powerwall",
                        "category" => "product",
                    )

            ),

        6 => array
            (
                "user" => "58cb6fb8bf3c3600043ec1f2",
                "company" => "tesla",
                "product" => array
                    (
                        "name" => "Powerwall",
                        "category" => "product",
                    )

            ),

        7 => array
            (
                "user" => "58cb6fb8bf3c3600043ec1f2",
                "company" => "tesla",
                "product" => array
                    (
                        "name" => "Powerwall",
                        "category" => "product",
                    )

            ),

        8 => array
            (
                "user" => "58cb6fb8bf3c3600043ec1f2",
                "company" => "tesla",
                "product" => array
                    (
                        "name" => "Model S",
                        "category" => "product",
                    )

            ),

    );
$result= array_count_values(array_column(array_column($dataarray,"product"),"name"));
echo "Count: ".$result["Powerwall"];