将数组分配给变量时出现问题

Question

我确信这是一个简单的问题。我在 simplexml 对象中有一个数组。当我尝试将数组分配给变量时，它仅分配数组的第一个索引。我怎样才能让它分配整个数组。这是我的代码。

$xml = simplexml_load_string(FlickrUtils::getMyPhotos("flickr.photos.search", $_SESSION['token']));

$photosArray = $xml->photos;
//$photosArray = $xml->photos->photo;

//echo gettype($photosArray);
print_r($photosArray);

这是 print_r($photosArray); 的结果

SimpleXMLElement Object
(
    [@attributes] => Array
        (
            [page] => 1
            [pages] => 1
            [perpage] => 100
            [total] => 4
        )

    [photo] => Array
        (
            [0] => SimpleXMLElement Object
                (
                    [@attributes] => Array
                        (
                            [id] => 5335626037
                            [owner] => 57991585@N02
                            [secret] => bd66f06b49
                            [server] => 5210
                            [farm] => 6
                            [title] => 1
                            [ispublic] => 1
                            [isfriend] => 0
                            [isfamily] => 0
                        )

                )

            [1] => SimpleXMLElement Object
                (
                    [@attributes] => Array
                        (
                            [id] => 5336238676
                            [owner] => 57991585@N02
                            [secret] => 898dffa011
                            [server] => 5286
                            [farm] => 6
                            [title] => 2
                            [ispublic] => 1
                            [isfriend] => 0
                            [isfamily] => 0
                        )

                )

            [2] => SimpleXMLElement Object
                (
                    [@attributes] => Array
                        (
                            [id] => 5335625381
                            [owner] => 57991585@N02
                            [secret] => 60a0c84597
                            [server] => 5126
                            [farm] => 6
                            [title] => 4
                            [ispublic] => 1
                            [isfriend] => 0
                            [isfamily] => 0
                        )

                )

            [3] => SimpleXMLElement Object
                (
                    [@attributes] => Array
                        (
                            [id] => 5335625195
                            [owner] => 57991585@N02
                            [secret] => 49348c1e8b
                            [server] => 5126
                            [farm] => 6
                            [title] => 3
                            [ispublic] => 1
                            [isfriend] => 0
                            [isfamily] => 0
                        )

                )

        )

)

谢谢你的帮助！

Answer 1

我在你的例子中没有看到数组。但是， $xml 是可遍历的，所以您可能是这个意思。但 $xml->photos 仅选择 first photo 元素。您可能正在寻找

$photosArray = $xml->xpath('//photo');

哪个确实返回一个数组。

Answer 2

为了返回所有照片，可以在 children() 上使用

您可以将 simplexml 对象列表转换为数组，例如

$photosArray = (array)$xml->children();

/* or retain the simplexml object */
$photosArray = $xml->children();