Question

我有以下数组：

Array
(
    [0] => Array
        (
            [id] => 4
            [rate] => 82.50
            [pounds] => 2
            [ounces] => 3
            [mailtype] => Package
            [country] => UNITED KINGDOM (GREAT BRITAIN)
            [svccommitments] => 1 - 3 business days
            [svcdescription] => Global Express Guaranteed (GXG)
            [maxdimensions] => Max. length 46", width 35", height 46" and max. length plus girth combined 108"
            [maxweight] =>30
        )

    [1] => Array
        (
            [id] => 6
            [rate] => 82.50
            [pounds] => 2
            [ounces] => 3
            [mailtype] => Package
            [country] => UNITED KINGDOM (GREAT BRITAIN)
            [svccommitments] => 1 - 3 business days
            [svcdescription] => Global Express Guaranteed Non-Document Rectangular
            [maxdimensions] => Max. length 46", width 35", height 46" and max. length plus girth combined 108"
            [maxweight] => 70
        )

我想使用CakePHP的Set：extract工具在'maxweight'上过滤这个数组，所以所有元素的'maxweight'都超过X并得到一个由'rate'和'svcdescription'组成的数组字段即：

Array (
 [82.50] => Global Express Guaranteed Non-Document Rectangular
 ...
 etc
)

这一切都可能吗？

Answer 1

在我看来，为了从Set::extract中获得最大价值，最好从一个结构更像下面的结构开始（否则我相信你必须运行Set::extract在循环中）：

$array = array(
    'Shipping' => array(
        array (
            "id" => 4,
            "rate" => 82.50,
            "pounds" => 2,
            "ounces" => 3,
            "mailtype" => "Package",
            "country" => "UNITED KINGDOM (GREAT BRITAIN)",
            "svccommitments" => "1 - 3 business days",
            "svcdescription" => "Global Express Guaranteed (GXG)",
            "maxdimensions" => 'Max. length 46", width 35", height 46" and max. length plus girth combined 108"',
            "maxweight" => 30
        ),
        array (
            "id" => 6,
            "rate" => 82.50,
            "pounds" => 2,
            "ounces" => 3,
            "mailtype" => "Package",
            "country" => "UNITED KINGDOM (GREAT BRITAIN)",
            "svccommitments" => "1 - 3 business days",
            "svcdescription" => "Global Express Guaranteed Non-Document Rectangular",
            "maxdimensions" => 'Max. length 46", width 35", height 46" and max. length plus girth combined 108"',
            "maxweight" => 70
        )
    )
);

现在，您可以使用Set::extract()的路径语法来提取maxweight大于$x的元素。

$extracted = Set::extract($array, '/Shipping[maxweight>'.$x.']');

使用此数据，您可以使用费率作为键来构建您正在寻找的数组，并使用Set::combine()将svcdescription作为值。

$combined = Set::combine($extracted, '{n}.Shipping.rate', '{n}.Shipping.svcdescription');

Answer 2

我之前从未使用过这个，但感谢鼓励我阅读它。您是否尝试过使用Set :: combine（）？

http://book.cakephp.org/view/662/combine

Answer 3

为什么不能只使用foreach循环来处理数组。

$returnArray = array();

// Where $x is weight amount you're testing against
foreach ($yourData as $eachData) {
    if ($eachData['maxweight'] > $x) {
        $returnArray[$eachData['rate']] = $eachData['svcdescription'];
    }
}

使用条件在Cakephp中使用Set Extract创建数组

3 个答案: