我沒有從php的xml響應中獲取屬性名稱？

Question

我從API獲得XML響應，但遇到了一個小問題。 我無法從XML響應中獲取屬性name 。

我正在共享圖像XML響應數據。

這是我嘗試獲取name屬性的代碼，但無法獲取，請幫助我。

$xml = new SimpleXMLElement($response);
    echo "<pre>"; print_r($xml);die();

當我執行我上面的代碼不顯示name屬性，如order_id, origin,destination 。它顯示，而0,1,2鍵不是顯示name屬性。

SimpleXMLElement Object
(
    [@attributes] => Array
        (
            [version] => 1.0
        )

    [object] => SimpleXMLElement Object
        (
            [@attributes] => Array
                (
                    [pk] => 1
                    [model] => awb
                )

            [field] => Array
                (
                    [0] => 899594723
                    [1] => 800000041
                    [2] => 1.13
                    [3] => JHANSI - JHA
                    [4] => DELHI - DLO
                    [5] => DELHI - DLO
                    [6] => DLO
                    [7] => KAMASHYA ONLINE SHOPPING - 331428
                    [8] => R G
                    [9] => 28-Jan-2018
                    [10] => Delivered / Closed
                    [11] => Delivered
                    [12] => 999 - Delivered
                    [13] => Delivered
                    [14] => 999
                    [15] => Self:R G: Android
                    [16] => 0.0000000
                    [17] => 0.0000000
                    [18] => 01-Feb-2018
                    [19] => 01-Feb-2018
                    [20] => 01-Feb-2018 12:44
                    [21] => 2018-02-01 12:43:00
                    [22] => None
                    [23] => 0
                    [24] => 2018-02-01 12:44:20
                    [25] => SimpleXMLElement Object
                        (
                            [@attributes] => Array
                                (
                                    [type] => CharField
                                    [name] => rts_system_delivery_status
                                )

                        )

                    [26] => SimpleXMLElement Object
                        (
                            [@attributes] => Array
                                (
                                    [type] => CharField
                                    [name] => rts_reason_code_number
                                )

                        )

                    [27] => SimpleXMLElement Object
                        (
                            [@attributes] => Array
                                (
                                    [type] => CharField
                                    [name] => rts_last_update
                                )

                        )

                    [28] => 110019
                    [29] => DELHI
                    [30] => New Delhi
                    [31] => SimpleXMLElement Object
                        (
                            [@attributes] => Array
                                (
                                    [type] => CharField
                                    [name] => delivery_pod_image
                                )

                        )

                    [32] => http://api3.ecomexpress.in//static/lastmile//sign/2018/2/1/sign_899594723_2018020112441517469260.png
                    [33] => SimpleXMLElement Object
                        (
                            [@attributes] => Array
                                (
                                    [type] => CharField
                                    [name] => rev_pickup_signature
                                )

                        )

                    [34] => SimpleXMLElement Object
                        (
                            [@attributes] => Array
                                (
                                    [type] => CharField
                                    [name] => rev_pickup_packed_image
                                )

                        )

                    [35] => SimpleXMLElement Object
                        (
                            [@attributes] => Array
                                (
                                    [type] => CharField
                                    [name] => rev_pickup_open_image
                                )

                        )

                 )
)
)

Answer 1

如果您閱讀有關SimpleXML的文章，那么您會發現執行print_r並不能提供所有數據。 如果您想要field元素的name屬性，則可以執行以下操作：

$xml = new SimpleXMLElement($response);
foreach ( $xml->object[0]->field as $field )   {
    echo $field['name'].PHP_EOL;
}

foreach將獲取已加載的XML，然后選擇第一個object元素（[0]將選擇第一個object元素），並在其中每個field元素。 echo行使用數組表示法來獲取name屬性。

如果需要特定的object元素，則可以使用XPath查找該對象，並執行與上面類似的操作，然后將每個對象打印出來。

$objectRec = $xml->xpath('//object[@pk="2"]')[0];
foreach ( $objectRec->field as $field )   {
    echo $field['name'].PHP_EOL;
}

上面的XPath選擇<object pk="2"...>元素。 請注意， ->xpath()返回匹配節點的數組，因此在這里我僅使用第一個（[0]）。

為了幫助檢查選定的元素，並且在print_r幫助不大的情況下，可以使用asXML()輸出節點的XML。

$objectRec = $xml->xpath('//object[@pk="1"]')[0];
echo $objectRec->asXML();