PHP 如何在 foreach 外部访问 SimpleXMLElement object 变量
PHP How to access SimpleXMLElement object variable outside foreach
如果我有一个位于 foreach 循环内的 SimpleXMLElement object，我如何在循环外访问它？
$auth_tokens = array('tok1', 'tok2', 'tok3', 'tok4');
foreach($auth_tokens as $auth_token) { // 4 iterations in loop
$response = curl_exec($connection); // API xml response
$xml = simplexml_load_string($response); // loaded xml into object
}
echo header('content-type: text/xml');
echo $xml->asXML();
.= 无效
[] 无效
更新：
下面是 api xml $response 实际输出的内容。如您所见，因为我正在查询 4 个身份验证令牌，所以每次迭代都是一个新的 xml 响应。当我尝试在循环外访问它时，由于多个 <?xml version="1.0" encoding="UTF-8"?> xml headers.
它无法正常工作
我卡住了。不确定如何将所有 4 个回复合二为一。
更新二：
Nick 帮助我弄清楚了如何将所有 4 个响应放入一个 xml 文档中，但我需要编辑节点名称和值，当 xml 位于SimpleXMLElement object。所以我想我可以先在 object 中处理数据，然后当我完成后，将 object 转换回 xml 并保存。但是在循环外访问 object 时，我 运行 遇到了问题。这是因为有 4 个 object 而不是 1 个，所以 .= 没有保存数据。
这是我 echo $response; 并查看源代码时 API 输出的内容。纯粹xml.
<?xml version="1.0" encoding="UTF-8"?>
<GetOrdersResponse xmlns="urn:ebay:apis:eBLBaseComponents">
<Timestamp>2018-10-26T16:04:38.375Z</Timestamp>
<Ack>Success</Ack>
<Version>1083</Version>
<Build>E1083_CORE_APIXO_18856776_R1</Build>
<PaginationResult>
<TotalNumberOfEntries>1</TotalNumberOfEntries>
</PaginationResult>
<OrderArray>
<Order>
<OrderID>11306025</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T14:38:44.000Z</CreatedTime>
</Order>
</OrderArray>
</GetOrdersResponse>
<?xml version="1.0" encoding="UTF-8"?>
<GetOrdersResponse xmlns="urn:ebay:apis:eBLBaseComponents">
<Timestamp>2018-10-26T16:04:39.049Z</Timestamp>
<Ack>Success</Ack>
<Version>1083</Version>
<Build>E1083_CORE_APIXO_18856776_R1</Build>
<PaginationResult>
<TotalNumberOfEntries>3</TotalNumberOfEntries>
</PaginationResult>
<OrderArray>
<Order>
<OrderID>39168452</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T14:38:53.000Z</CreatedTime>
</Order>
<Order>
<OrderID>37219192</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:36:41.000Z</CreatedTime>
</Order>
<Order>
<OrderID>37198277</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:35:01.000Z</CreatedTime>
</Order>
</OrderArray>
</GetOrdersResponse>
<?xml version="1.0" encoding="UTF-8"?>
<GetOrdersResponse xmlns="urn:ebay:apis:eBLBaseComponents">
<Timestamp>2018-10-26T16:04:39.454Z</Timestamp>
<Ack>Success</Ack>
<Version>1083</Version>
<Build>E1083_CORE_APIXO_18856776_R1</Build>
<PaginationResult>
<TotalNumberOfEntries>2</TotalNumberOfEntries>
</PaginationResult>
<OrderArray>
<Order>
<OrderID>16283499</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:13:21.000Z</CreatedTime>
</Order>
<Order>
<OrderID>16283499</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:36:40.000Z</CreatedTime>
</Order>
</OrderArray>
</GetOrdersResponse>
<?xml version="1.0" encoding="UTF-8"?>
<GetOrdersResponse xmlns="urn:ebay:apis:eBLBaseComponents">
<Timestamp>2018-10-26T16:04:39.782Z</Timestamp>
<Ack>Success</Ack>
<Version>1083</Version>
<Build>E1083_CORE_APIXO_18856776_R1</Build>
<PaginationResult>
<TotalNumberOfEntries>1</TotalNumberOfEntries>
</PaginationResult>
<OrderArray>
<Order>
<OrderID>26348797</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:40:25.000Z</CreatedTime>
</Order>
</OrderArray>
</GetOrdersResponse>
这是我执行 var_dump ($response); 并查看源代码时得到的结果。
string(504) "
<?xml version="1.0" encoding="UTF-8"?>
<GetOrdersResponse xmlns="urn:ebay:apis:eBLBaseComponents">
<Timestamp>2018-10-26T16:10:49.358Z</Timestamp>
<Ack>Success</Ack>
<Version>1083</Version>
<Build>E1083_CORE_APIXO_18856776_R1</Build>
<PaginationResult>
<TotalNumberOfEntries>1</TotalNumberOfEntries>
</PaginationResult>
<OrderArray>
<Order>
<OrderID>11306025</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T14:38:44.000Z</CreatedTime>
</Order>
</OrderArray>
</GetOrdersResponse>
"
string(797) "
<?xml version="1.0" encoding="UTF-8"?>
<GetOrdersResponse xmlns="urn:ebay:apis:eBLBaseComponents">
<Timestamp>2018-10-26T16:10:49.439Z</Timestamp>
<Ack>Success</Ack>
<Version>1083</Version>
<Build>E1083_CORE_APIXO_18856776_R1</Build>
<PaginationResult>
<TotalNumberOfEntries>3</TotalNumberOfEntries>
</PaginationResult>
<OrderArray>
<Order>
<OrderID>39168452</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T14:38:53.000Z</CreatedTime>
</Order>
<Order>
<OrderID>37219192</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:36:41.000Z</CreatedTime>
</Order>
<Order>
<OrderID>37198277</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:35:01.000Z</CreatedTime>
</Order>
</OrderArray>
</GetOrdersResponse>
"
string(798) "
<?xml version="1.0" encoding="UTF-8"?>
<GetOrdersResponse xmlns="urn:ebay:apis:eBLBaseComponents">
<Timestamp>2018-10-26T16:10:50.001Z</Timestamp>
<Ack>Success</Ack>
<Version>1083</Version>
<Build>E1083_CORE_APIXO_18856776_R1</Build>
<PaginationResult>
<TotalNumberOfEntries>3</TotalNumberOfEntries>
</PaginationResult>
<OrderArray>
<Order>
<OrderID>16283499</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:13:21.000Z</CreatedTime>
</Order>
<Order>
<OrderID>16283499</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:36:40.000Z</CreatedTime>
</Order>
<Order>
<OrderID>16275107</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T16:09:40.000Z</CreatedTime>
</Order>
</OrderArray>
</GetOrdersResponse>
"
string(504) "
<?xml version="1.0" encoding="UTF-8"?>
<GetOrdersResponse xmlns="urn:ebay:apis:eBLBaseComponents">
<Timestamp>2018-10-26T16:10:50.329Z</Timestamp>
<Ack>Success</Ack>
<Version>1083</Version>
<Build>E1083_CORE_APIXO_18856776_R1</Build>
<PaginationResult>
<TotalNumberOfEntries>1</TotalNumberOfEntries>
</PaginationResult>
<OrderArray>
<Order>
<OrderID>26348797</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:40:25.000Z</CreatedTime>
</Order>
</OrderArray>
</GetOrdersResponse>
"
如果我在 foreach 中使用 $xml = simplexml_load_string($response);，并且 var_dump ($xml);，则输出 4 objects。
object(SimpleXMLElement)#1 (6) {
["Timestamp"]=>
string(24) "2018-10-26T16:32:21.048Z"
["Ack"]=>
string(7) "Success"
["Version"]=>
string(4) "1083"
["Build"]=>
string(28) "E1083_CORE_APIXO_18856776_R1"
["PaginationResult"]=>
object(SimpleXMLElement)#2 (1) {
["TotalNumberOfEntries"]=>
string(1) "1"
}
["OrderArray"]=>
object(SimpleXMLElement)#3 (1) {
["Order"]=>
object(SimpleXMLElement)#4 (3) {
["OrderID"]=>
string(26) "11306025"
["OrderStatus"]=>
string(9) "Completed"
["CreatedTime"]=>
string(24) "2018-10-26T14:38:44.000Z"
}
}
}
object(SimpleXMLElement)#3 (6) {
["Timestamp"]=>
string(24) "2018-10-26T16:32:21.736Z"
["Ack"]=>
string(7) "Success"
["Version"]=>
string(4) "1083"
["Build"]=>
string(28) "E1083_CORE_APIXO_18856776_R1"
["PaginationResult"]=>
object(SimpleXMLElement)#1 (1) {
["TotalNumberOfEntries"]=>
string(1) "4"
}
["OrderArray"]=>
object(SimpleXMLElement)#2 (1) {
["Order"]=>
array(4) {
[0]=>
object(SimpleXMLElement)#4 (3) {
["OrderID"]=>
string(25) "39168452"
["OrderStatus"]=>
string(9) "Completed"
["CreatedTime"]=>
string(24) "2018-10-26T14:38:53.000Z"
}
[1]=>
object(SimpleXMLElement)#5 (3) {
["OrderID"]=>
string(26) "37219192"
["OrderStatus"]=>
string(9) "Completed"
["CreatedTime"]=>
string(24) "2018-10-26T15:36:41.000Z"
}
[2]=>
object(SimpleXMLElement)#6 (3) {
["OrderID"]=>
string(26) "37198277"
["OrderStatus"]=>
string(9) "Completed"
["CreatedTime"]=>
string(24) "2018-10-26T15:35:01.000Z"
}
[3]=>
object(SimpleXMLElement)#7 (3) {
["OrderID"]=>
string(26) "37185515"
["OrderStatus"]=>
string(9) "Completed"
["CreatedTime"]=>
string(24) "2018-10-26T16:24:19.000Z"
}
}
}
}
object(SimpleXMLElement)#2 (6) {
["Timestamp"]=>
string(24) "2018-10-26T16:32:22.529Z"
["Ack"]=>
string(7) "Success"
["Version"]=>
string(4) "1083"
["Build"]=>
string(28) "E1083_CORE_APIXO_18856776_R1"
["PaginationResult"]=>
object(SimpleXMLElement)#3 (1) {
["TotalNumberOfEntries"]=>
string(1) "3"
}
["OrderArray"]=>
object(SimpleXMLElement)#1 (1) {
["Order"]=>
array(3) {
[0]=>
object(SimpleXMLElement)#7 (3) {
["OrderID"]=>
string(26) "16283499"
["OrderStatus"]=>
string(9) "Completed"
["CreatedTime"]=>
string(24) "2018-10-26T15:13:21.000Z"
}
[1]=>
object(SimpleXMLElement)#6 (3) {
["OrderID"]=>
string(26) "16283499"
["OrderStatus"]=>
string(9) "Completed"
["CreatedTime"]=>
string(24) "2018-10-26T15:36:40.000Z"
}
[2]=>
object(SimpleXMLElement)#5 (3) {
["OrderID"]=>
string(26) "16275107"
["OrderStatus"]=>
string(9) "Completed"
["CreatedTime"]=>
string(24) "2018-10-26T16:09:40.000Z"
}
}
}
}
object(SimpleXMLElement)#1 (6) {
["Timestamp"]=>
string(24) "2018-10-26T16:32:22.751Z"
["Ack"]=>
string(7) "Success"
["Version"]=>
string(4) "1083"
["Build"]=>
string(28) "E1083_CORE_APIXO_18856776_R1"
["PaginationResult"]=>
object(SimpleXMLElement)#2 (1) {
["TotalNumberOfEntries"]=>
string(1) "1"
}
["OrderArray"]=>
object(SimpleXMLElement)#3 (1) {
["Order"]=>
object(SimpleXMLElement)#5 (3) {
["OrderID"]=>
string(26) "26348797"
["OrderStatus"]=>
string(9) "Completed"
["CreatedTime"]=>
string(24) "2018-10-26T15:40:25.000Z"
}
}
}
这就是我 echo '<pre>' . var_export($xml, true) . '</pre><br>'; 时得到的输出。我发现这个更容易阅读并且可以清楚地看到它是 4 objects.
SimpleXMLElement::__set_state(array(
'Timestamp' => '2018-10-26T16:36:41.377Z',
'Ack' => 'Success',
'Version' => '1083',
'Build' => 'E1083_CORE_APIXO_18856776_R1',
'PaginationResult' =>
SimpleXMLElement::__set_state(array(
'TotalNumberOfEntries' => '1',
)),
'OrderArray' =>
SimpleXMLElement::__set_state(array(
'Order' =>
SimpleXMLElement::__set_state(array(
'OrderID' => '11306025',
'OrderStatus' => 'Completed',
'CreatedTime' => '2018-10-26T14:38:44.000Z',
)),
)),
))
SimpleXMLElement::__set_state(array(
'Timestamp' => '2018-10-26T16:36:43.083Z',
'Ack' => 'Success',
'Version' => '1083',
'Build' => 'E1083_CORE_APIXO_18856776_R1',
'PaginationResult' =>
SimpleXMLElement::__set_state(array(
'TotalNumberOfEntries' => '4',
)),
'OrderArray' =>
SimpleXMLElement::__set_state(array(
'Order' =>
array (
0 =>
SimpleXMLElement::__set_state(array(
'OrderID' => '39168452',
'OrderStatus' => 'Completed',
'CreatedTime' => '2018-10-26T14:38:53.000Z',
)),
1 =>
SimpleXMLElement::__set_state(array(
'OrderID' => '37219192',
'OrderStatus' => 'Completed',
'CreatedTime' => '2018-10-26T15:36:41.000Z',
)),
2 =>
SimpleXMLElement::__set_state(array(
'OrderID' => '37198277',
'OrderStatus' => 'Completed',
'CreatedTime' => '2018-10-26T15:35:01.000Z',
)),
3 =>
SimpleXMLElement::__set_state(array(
'OrderID' => '37185515',
'OrderStatus' => 'Completed',
'CreatedTime' => '2018-10-26T16:24:19.000Z',
)),
),
)),
))
SimpleXMLElement::__set_state(array(
'Timestamp' => '2018-10-26T16:36:43.783Z',
'Ack' => 'Success',
'Version' => '1083',
'Build' => 'E1083_CORE_APIXO_18856776_R1',
'PaginationResult' =>
SimpleXMLElement::__set_state(array(
'TotalNumberOfEntries' => '4',
)),
'OrderArray' =>
SimpleXMLElement::__set_state(array(
'Order' =>
array (
0 =>
SimpleXMLElement::__set_state(array(
'OrderID' => '16283499',
'OrderStatus' => 'Completed',
'CreatedTime' => '2018-10-26T15:13:21.000Z',
)),
1 =>
SimpleXMLElement::__set_state(array(
'OrderID' => '16283499',
'OrderStatus' => 'Completed',
'CreatedTime' => '2018-10-26T15:36:40.000Z',
)),
2 =>
SimpleXMLElement::__set_state(array(
'OrderID' => '16275107',
'OrderStatus' => 'Completed',
'CreatedTime' => '2018-10-26T16:09:40.000Z',
)),
3 =>
SimpleXMLElement::__set_state(array(
'OrderID' => '16258277',
'OrderStatus' => 'Completed',
'CreatedTime' => '2018-10-26T16:36:19.000Z',
)),
),
)),
))
SimpleXMLElement::__set_state(array(
'Timestamp' => '2018-10-26T16:36:44.157Z',
'Ack' => 'Success',
'Version' => '1083',
'Build' => 'E1083_CORE_APIXO_18856776_R1',
'PaginationResult' =>
SimpleXMLElement::__set_state(array(
'TotalNumberOfEntries' => '1',
)),
'OrderArray' =>
SimpleXMLElement::__set_state(array(
'Order' =>
SimpleXMLElement::__set_state(array(
'OrderID' => '26348797',
'OrderStatus' => 'Completed',
'CreatedTime' => '2018-10-26T15:40:25.000Z',
)),
)),
))
这就是我在循环中使用 echo header('content-type: text/xml'); echo $xml->asXML(); 时得到的输出。
<?xml version="1.0" encoding="UTF-8"?>
<GetOrdersResponse xmlns="urn:ebay:apis:eBLBaseComponents">
<Timestamp>2018-10-26T16:42:57.532Z</Timestamp>
<Ack>Success</Ack>
<Version>1083</Version>
<Build>E1083_CORE_APIXO_18856776_R1</Build>
<PaginationResult>
<TotalNumberOfEntries>1</TotalNumberOfEntries>
</PaginationResult>
<OrderArray>
<Order>
<OrderID>11306025</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T14:38:44.000Z</CreatedTime>
</Order>
</OrderArray>
</GetOrdersResponse>
<?xml version="1.0" encoding="UTF-8"?>
<GetOrdersResponse xmlns="urn:ebay:apis:eBLBaseComponents">
<Timestamp>2018-10-26T16:42:58.218Z</Timestamp>
<Ack>Success</Ack>
<Version>1083</Version>
<Build>E1083_CORE_APIXO_18856776_R1</Build>
<PaginationResult>
<TotalNumberOfEntries>4</TotalNumberOfEntries>
</PaginationResult>
<OrderArray>
<Order>
<OrderID>39168452</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T14:38:53.000Z</CreatedTime>
</Order>
<Order>
<OrderID>37219192</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:36:41.000Z</CreatedTime>
</Order>
<Order>
<OrderID>37198277</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:35:01.000Z</CreatedTime>
</Order>
<Order>
<OrderID>37185515</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T16:24:19.000Z</CreatedTime>
</Order>
</OrderArray>
</GetOrdersResponse>
<?xml version="1.0" encoding="UTF-8"?>
<GetOrdersResponse xmlns="urn:ebay:apis:eBLBaseComponents">
<Timestamp>2018-10-26T16:42:58.861Z</Timestamp>
<Ack>Success</Ack>
<Version>1083</Version>
<Build>E1083_CORE_APIXO_18856776_R1</Build>
<PaginationResult>
<TotalNumberOfEntries>4</TotalNumberOfEntries>
</PaginationResult>
<OrderArray>
<Order>
<OrderID>16283499</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:13:21.000Z</CreatedTime>
</Order>
<Order>
<OrderID>16283499</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:36:40.000Z</CreatedTime>
</Order>
<Order>
<OrderID>16275107</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T16:09:40.000Z</CreatedTime>
</Order>
<Order>
<OrderID>16258277</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T16:36:19.000Z</CreatedTime>
</Order>
</OrderArray>
</GetOrdersResponse>
<?xml version="1.0" encoding="UTF-8"?>
<GetOrdersResponse xmlns="urn:ebay:apis:eBLBaseComponents">
<Timestamp>2018-10-26T16:42:59.253Z</Timestamp>
<Ack>Success</Ack>
<Version>1083</Version>
<Build>E1083_CORE_APIXO_18856776_R1</Build>
<PaginationResult>
<TotalNumberOfEntries>1</TotalNumberOfEntries>
</PaginationResult>
<OrderArray>
<Order>
<OrderID>26348797</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:40:25.000Z</CreatedTime>
</Order>
</OrderArray>
</GetOrdersResponse>
我需要的是更改所有 <OrderID></OrderID> 节点以显示 <Test></Test> 并附加到其中的值，我用这个
做到了
foreach($auth_tokens as $key => $auth_token) {
$responses = curl_exec($connection);
$xml = simplexml_load_string($responses);
curl_close($connection);
$entries = $xml->PaginationResult->TotalNumberOfEntries;
$xml = $xml->OrderArray->Order;
if($entries == 0) {
continue;
} else {
foreach($xml as $key => $val) {
$val->Test = substr($val->OrderStatus, 0, 3) . $val->OrderID; // changes the <OrderID> node from <OrderID> to <Test> and appends the first 3 charachters from <OrderStatus> value to the <Test> value
unset($val->OrderID); // deletes the now empty <OrderID> node
} // end foreach
}
echo header('content-type: text/xml');
echo $xml->asXML();
} // end foreach
这输出正是我需要的，除了它只需要一个 parent 节点环绕它并且它只从每个响应输出 1 个订单。
<Order>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:36:41.000Z</CreatedTime>
<Test>Com372191926</Test>
</Order>
<Order>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:13:21.000Z</CreatedTime>
<Test>Com16283499</Test>
</Order>
<Order>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:40:25.000Z</CreatedTime>
<Test>Com26348797</Test>
</Order>
但我似乎无法围绕此获得 parent 节点，因为我无法成功保存此数据并在 foreach 循环之外访问它。我很接近！
您可以尝试这样的操作，将响应聚合到一个 XML 字符串中，然后在转换之前将其包装在根元素中：
$auth_tokens = array('tok1', 'tok2', 'tok3', 'tok4');
$xmlstr = '';
foreach($auth_tokens as $auth_token) { // 4 iterations in loop
$response = curl_exec($connection); // API xml response
$xmlstr .= $response; // add response to XML
}
$xml = simplexml_load_string("<Orders>$xmlstr</Orders>");
header('content-type: text/xml');
echo $xml->asXML();
更新
如果 XML 响应包含 <?xml ... > headers，则上述代码不起作用。快速而肮脏的解决方法是使用 preg_replace 将它们删除，即将 $xmlstr .= $response; 更改为
$xmlstr .= preg_replace('/<\?xml[^>]*>/', '', $response);
"correct" 修复是单独处理 XML 响应并将它们作为 children 添加到根文档。这可以使用 DomDocument:
来完成
$xml = new DomDocument();
$xml->loadXML('<Orders></Orders>');
$xmlroot = $xml->documentElement;
$respdoc = new DomDocument();
foreach($auth_tokens as $auth_token) { // 4 iterations in loop
$response = curl_exec($connection); // API xml response
$respdoc->loadXML($response); // create a domDocument
$resproot = $respdoc->documentElement; // get the root element
$resproot = $xml->importNode($resproot, true); // import into XML
$xmlroot->appendChild($resproot);
}
header('content-type: text/xml');
echo $xml->saveXML();
我想通了这个问题。我需要在子 foreach 循环中连接 .=，而不是在父循环中。然后我就可以访问循环外的数据了。而且我必须使用 $val->asXML() 将数据保存到一个变量中。请注意下面代码中的注释行。
foreach($auth_tokens as $key => $auth_token) { // 4 iterations in loop
$responses = curl_exec($connection); // API xml response
$xml = simplexml_load_string($responses); // loaded xml into SimpleXMLElement object
curl_close($connection);
$entries = $xml->PaginationResult->TotalNumberOfEntries;
$xml = $xml->OrderArray->Order; // Just get the Order elements
if($entries == 0) {
continue;
} else {
foreach($xml as $key => $val) {
$val->Test = substr($val->OrderStatus, 0, 3) . $val->OrderID; // changes the <OrderID> node from <OrderID> to <Test> and appends the first 3 charachters from <OrderStatus> value to the <Test> value
unset($val->OrderID); // deletes the <OrderID> node
$orders .= $val->asXML(); // concatenate here in child loop instead of parent foreach
} // end child foreach
}
} // end parent foreach
$xml = new DomDocument('1.0', 'utf-8');
$xml->preserveWhiteSpace = false;
$xml->formatOutput = true;
$xml->loadXML('<Orders>' . $orders . '</Orders>'); // able to add my parent node <orders></Orders>
$xml->save('test.xml', LIBXML_NOEMPTYTAG); // saves xml to file
header('content-type: text/xml');
echo $xml->saveXML(); // saves xml for display
输出正是我需要的，没有太多开销，而且格式也很好。
<?xml version="1.0"?>
<Orders>
<Order>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:36:41.000Z</CreatedTime>
<Test>Com10789</Test>
</Order>
<Order>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:13:21.000Z</CreatedTime>
<Test>Com10790</Test>
</Order>
<Order>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:40:25.000Z</CreatedTime>
<Test>Com141570</Test>
</Order>
<Order>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:36:41.000Z</CreatedTime>
<Test>Com141571</Test>
</Order>
<Order>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:13:21.000Z</CreatedTime>
<Test>Com141572</Test>
</Order>
<Order>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:36:41.000Z</CreatedTime>
<Test>Com19992</Test>
</Order>
<Order>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:40:25.000Z</CreatedTime>
<Test>Com19993</Test>
</Order>
</Orders>
如果我有一个位于 foreach 循环内的 SimpleXMLElement object，我如何在循环外访问它？
$auth_tokens = array('tok1', 'tok2', 'tok3', 'tok4');
foreach($auth_tokens as $auth_token) { // 4 iterations in loop
$response = curl_exec($connection); // API xml response
$xml = simplexml_load_string($response); // loaded xml into object
}
echo header('content-type: text/xml');
echo $xml->asXML();
.= 无效
[] 无效
更新：
下面是 api xml $response 实际输出的内容。如您所见，因为我正在查询 4 个身份验证令牌，所以每次迭代都是一个新的 xml 响应。当我尝试在循环外访问它时，由于多个 <?xml version="1.0" encoding="UTF-8"?> xml headers.
我卡住了。不确定如何将所有 4 个回复合二为一。
更新二：
Nick 帮助我弄清楚了如何将所有 4 个响应放入一个 xml 文档中，但我需要编辑节点名称和值，当 xml 位于SimpleXMLElement object。所以我想我可以先在 object 中处理数据，然后当我完成后，将 object 转换回 xml 并保存。但是在循环外访问 object 时，我 运行 遇到了问题。这是因为有 4 个 object 而不是 1 个，所以 .= 没有保存数据。
这是我 echo $response; 并查看源代码时 API 输出的内容。纯粹xml.
<?xml version="1.0" encoding="UTF-8"?>
<GetOrdersResponse xmlns="urn:ebay:apis:eBLBaseComponents">
<Timestamp>2018-10-26T16:04:38.375Z</Timestamp>
<Ack>Success</Ack>
<Version>1083</Version>
<Build>E1083_CORE_APIXO_18856776_R1</Build>
<PaginationResult>
<TotalNumberOfEntries>1</TotalNumberOfEntries>
</PaginationResult>
<OrderArray>
<Order>
<OrderID>11306025</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T14:38:44.000Z</CreatedTime>
</Order>
</OrderArray>
</GetOrdersResponse>
<?xml version="1.0" encoding="UTF-8"?>
<GetOrdersResponse xmlns="urn:ebay:apis:eBLBaseComponents">
<Timestamp>2018-10-26T16:04:39.049Z</Timestamp>
<Ack>Success</Ack>
<Version>1083</Version>
<Build>E1083_CORE_APIXO_18856776_R1</Build>
<PaginationResult>
<TotalNumberOfEntries>3</TotalNumberOfEntries>
</PaginationResult>
<OrderArray>
<Order>
<OrderID>39168452</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T14:38:53.000Z</CreatedTime>
</Order>
<Order>
<OrderID>37219192</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:36:41.000Z</CreatedTime>
</Order>
<Order>
<OrderID>37198277</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:35:01.000Z</CreatedTime>
</Order>
</OrderArray>
</GetOrdersResponse>
<?xml version="1.0" encoding="UTF-8"?>
<GetOrdersResponse xmlns="urn:ebay:apis:eBLBaseComponents">
<Timestamp>2018-10-26T16:04:39.454Z</Timestamp>
<Ack>Success</Ack>
<Version>1083</Version>
<Build>E1083_CORE_APIXO_18856776_R1</Build>
<PaginationResult>
<TotalNumberOfEntries>2</TotalNumberOfEntries>
</PaginationResult>
<OrderArray>
<Order>
<OrderID>16283499</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:13:21.000Z</CreatedTime>
</Order>
<Order>
<OrderID>16283499</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:36:40.000Z</CreatedTime>
</Order>
</OrderArray>
</GetOrdersResponse>
<?xml version="1.0" encoding="UTF-8"?>
<GetOrdersResponse xmlns="urn:ebay:apis:eBLBaseComponents">
<Timestamp>2018-10-26T16:04:39.782Z</Timestamp>
<Ack>Success</Ack>
<Version>1083</Version>
<Build>E1083_CORE_APIXO_18856776_R1</Build>
<PaginationResult>
<TotalNumberOfEntries>1</TotalNumberOfEntries>
</PaginationResult>
<OrderArray>
<Order>
<OrderID>26348797</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:40:25.000Z</CreatedTime>
</Order>
</OrderArray>
</GetOrdersResponse>
这是我执行 var_dump ($response); 并查看源代码时得到的结果。
string(504) "
<?xml version="1.0" encoding="UTF-8"?>
<GetOrdersResponse xmlns="urn:ebay:apis:eBLBaseComponents">
<Timestamp>2018-10-26T16:10:49.358Z</Timestamp>
<Ack>Success</Ack>
<Version>1083</Version>
<Build>E1083_CORE_APIXO_18856776_R1</Build>
<PaginationResult>
<TotalNumberOfEntries>1</TotalNumberOfEntries>
</PaginationResult>
<OrderArray>
<Order>
<OrderID>11306025</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T14:38:44.000Z</CreatedTime>
</Order>
</OrderArray>
</GetOrdersResponse>
"
string(797) "
<?xml version="1.0" encoding="UTF-8"?>
<GetOrdersResponse xmlns="urn:ebay:apis:eBLBaseComponents">
<Timestamp>2018-10-26T16:10:49.439Z</Timestamp>
<Ack>Success</Ack>
<Version>1083</Version>
<Build>E1083_CORE_APIXO_18856776_R1</Build>
<PaginationResult>
<TotalNumberOfEntries>3</TotalNumberOfEntries>
</PaginationResult>
<OrderArray>
<Order>
<OrderID>39168452</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T14:38:53.000Z</CreatedTime>
</Order>
<Order>
<OrderID>37219192</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:36:41.000Z</CreatedTime>
</Order>
<Order>
<OrderID>37198277</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:35:01.000Z</CreatedTime>
</Order>
</OrderArray>
</GetOrdersResponse>
"
string(798) "
<?xml version="1.0" encoding="UTF-8"?>
<GetOrdersResponse xmlns="urn:ebay:apis:eBLBaseComponents">
<Timestamp>2018-10-26T16:10:50.001Z</Timestamp>
<Ack>Success</Ack>
<Version>1083</Version>
<Build>E1083_CORE_APIXO_18856776_R1</Build>
<PaginationResult>
<TotalNumberOfEntries>3</TotalNumberOfEntries>
</PaginationResult>
<OrderArray>
<Order>
<OrderID>16283499</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:13:21.000Z</CreatedTime>
</Order>
<Order>
<OrderID>16283499</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:36:40.000Z</CreatedTime>
</Order>
<Order>
<OrderID>16275107</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T16:09:40.000Z</CreatedTime>
</Order>
</OrderArray>
</GetOrdersResponse>
"
string(504) "
<?xml version="1.0" encoding="UTF-8"?>
<GetOrdersResponse xmlns="urn:ebay:apis:eBLBaseComponents">
<Timestamp>2018-10-26T16:10:50.329Z</Timestamp>
<Ack>Success</Ack>
<Version>1083</Version>
<Build>E1083_CORE_APIXO_18856776_R1</Build>
<PaginationResult>
<TotalNumberOfEntries>1</TotalNumberOfEntries>
</PaginationResult>
<OrderArray>
<Order>
<OrderID>26348797</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:40:25.000Z</CreatedTime>
</Order>
</OrderArray>
</GetOrdersResponse>
"
如果我在 foreach 中使用 $xml = simplexml_load_string($response);，并且 var_dump ($xml);，则输出 4 objects。
object(SimpleXMLElement)#1 (6) {
["Timestamp"]=>
string(24) "2018-10-26T16:32:21.048Z"
["Ack"]=>
string(7) "Success"
["Version"]=>
string(4) "1083"
["Build"]=>
string(28) "E1083_CORE_APIXO_18856776_R1"
["PaginationResult"]=>
object(SimpleXMLElement)#2 (1) {
["TotalNumberOfEntries"]=>
string(1) "1"
}
["OrderArray"]=>
object(SimpleXMLElement)#3 (1) {
["Order"]=>
object(SimpleXMLElement)#4 (3) {
["OrderID"]=>
string(26) "11306025"
["OrderStatus"]=>
string(9) "Completed"
["CreatedTime"]=>
string(24) "2018-10-26T14:38:44.000Z"
}
}
}
object(SimpleXMLElement)#3 (6) {
["Timestamp"]=>
string(24) "2018-10-26T16:32:21.736Z"
["Ack"]=>
string(7) "Success"
["Version"]=>
string(4) "1083"
["Build"]=>
string(28) "E1083_CORE_APIXO_18856776_R1"
["PaginationResult"]=>
object(SimpleXMLElement)#1 (1) {
["TotalNumberOfEntries"]=>
string(1) "4"
}
["OrderArray"]=>
object(SimpleXMLElement)#2 (1) {
["Order"]=>
array(4) {
[0]=>
object(SimpleXMLElement)#4 (3) {
["OrderID"]=>
string(25) "39168452"
["OrderStatus"]=>
string(9) "Completed"
["CreatedTime"]=>
string(24) "2018-10-26T14:38:53.000Z"
}
[1]=>
object(SimpleXMLElement)#5 (3) {
["OrderID"]=>
string(26) "37219192"
["OrderStatus"]=>
string(9) "Completed"
["CreatedTime"]=>
string(24) "2018-10-26T15:36:41.000Z"
}
[2]=>
object(SimpleXMLElement)#6 (3) {
["OrderID"]=>
string(26) "37198277"
["OrderStatus"]=>
string(9) "Completed"
["CreatedTime"]=>
string(24) "2018-10-26T15:35:01.000Z"
}
[3]=>
object(SimpleXMLElement)#7 (3) {
["OrderID"]=>
string(26) "37185515"
["OrderStatus"]=>
string(9) "Completed"
["CreatedTime"]=>
string(24) "2018-10-26T16:24:19.000Z"
}
}
}
}
object(SimpleXMLElement)#2 (6) {
["Timestamp"]=>
string(24) "2018-10-26T16:32:22.529Z"
["Ack"]=>
string(7) "Success"
["Version"]=>
string(4) "1083"
["Build"]=>
string(28) "E1083_CORE_APIXO_18856776_R1"
["PaginationResult"]=>
object(SimpleXMLElement)#3 (1) {
["TotalNumberOfEntries"]=>
string(1) "3"
}
["OrderArray"]=>
object(SimpleXMLElement)#1 (1) {
["Order"]=>
array(3) {
[0]=>
object(SimpleXMLElement)#7 (3) {
["OrderID"]=>
string(26) "16283499"
["OrderStatus"]=>
string(9) "Completed"
["CreatedTime"]=>
string(24) "2018-10-26T15:13:21.000Z"
}
[1]=>
object(SimpleXMLElement)#6 (3) {
["OrderID"]=>
string(26) "16283499"
["OrderStatus"]=>
string(9) "Completed"
["CreatedTime"]=>
string(24) "2018-10-26T15:36:40.000Z"
}
[2]=>
object(SimpleXMLElement)#5 (3) {
["OrderID"]=>
string(26) "16275107"
["OrderStatus"]=>
string(9) "Completed"
["CreatedTime"]=>
string(24) "2018-10-26T16:09:40.000Z"
}
}
}
}
object(SimpleXMLElement)#1 (6) {
["Timestamp"]=>
string(24) "2018-10-26T16:32:22.751Z"
["Ack"]=>
string(7) "Success"
["Version"]=>
string(4) "1083"
["Build"]=>
string(28) "E1083_CORE_APIXO_18856776_R1"
["PaginationResult"]=>
object(SimpleXMLElement)#2 (1) {
["TotalNumberOfEntries"]=>
string(1) "1"
}
["OrderArray"]=>
object(SimpleXMLElement)#3 (1) {
["Order"]=>
object(SimpleXMLElement)#5 (3) {
["OrderID"]=>
string(26) "26348797"
["OrderStatus"]=>
string(9) "Completed"
["CreatedTime"]=>
string(24) "2018-10-26T15:40:25.000Z"
}
}
}
这就是我 echo '<pre>' . var_export($xml, true) . '</pre><br>'; 时得到的输出。我发现这个更容易阅读并且可以清楚地看到它是 4 objects.
SimpleXMLElement::__set_state(array(
'Timestamp' => '2018-10-26T16:36:41.377Z',
'Ack' => 'Success',
'Version' => '1083',
'Build' => 'E1083_CORE_APIXO_18856776_R1',
'PaginationResult' =>
SimpleXMLElement::__set_state(array(
'TotalNumberOfEntries' => '1',
)),
'OrderArray' =>
SimpleXMLElement::__set_state(array(
'Order' =>
SimpleXMLElement::__set_state(array(
'OrderID' => '11306025',
'OrderStatus' => 'Completed',
'CreatedTime' => '2018-10-26T14:38:44.000Z',
)),
)),
))
SimpleXMLElement::__set_state(array(
'Timestamp' => '2018-10-26T16:36:43.083Z',
'Ack' => 'Success',
'Version' => '1083',
'Build' => 'E1083_CORE_APIXO_18856776_R1',
'PaginationResult' =>
SimpleXMLElement::__set_state(array(
'TotalNumberOfEntries' => '4',
)),
'OrderArray' =>
SimpleXMLElement::__set_state(array(
'Order' =>
array (
0 =>
SimpleXMLElement::__set_state(array(
'OrderID' => '39168452',
'OrderStatus' => 'Completed',
'CreatedTime' => '2018-10-26T14:38:53.000Z',
)),
1 =>
SimpleXMLElement::__set_state(array(
'OrderID' => '37219192',
'OrderStatus' => 'Completed',
'CreatedTime' => '2018-10-26T15:36:41.000Z',
)),
2 =>
SimpleXMLElement::__set_state(array(
'OrderID' => '37198277',
'OrderStatus' => 'Completed',
'CreatedTime' => '2018-10-26T15:35:01.000Z',
)),
3 =>
SimpleXMLElement::__set_state(array(
'OrderID' => '37185515',
'OrderStatus' => 'Completed',
'CreatedTime' => '2018-10-26T16:24:19.000Z',
)),
),
)),
))
SimpleXMLElement::__set_state(array(
'Timestamp' => '2018-10-26T16:36:43.783Z',
'Ack' => 'Success',
'Version' => '1083',
'Build' => 'E1083_CORE_APIXO_18856776_R1',
'PaginationResult' =>
SimpleXMLElement::__set_state(array(
'TotalNumberOfEntries' => '4',
)),
'OrderArray' =>
SimpleXMLElement::__set_state(array(
'Order' =>
array (
0 =>
SimpleXMLElement::__set_state(array(
'OrderID' => '16283499',
'OrderStatus' => 'Completed',
'CreatedTime' => '2018-10-26T15:13:21.000Z',
)),
1 =>
SimpleXMLElement::__set_state(array(
'OrderID' => '16283499',
'OrderStatus' => 'Completed',
'CreatedTime' => '2018-10-26T15:36:40.000Z',
)),
2 =>
SimpleXMLElement::__set_state(array(
'OrderID' => '16275107',
'OrderStatus' => 'Completed',
'CreatedTime' => '2018-10-26T16:09:40.000Z',
)),
3 =>
SimpleXMLElement::__set_state(array(
'OrderID' => '16258277',
'OrderStatus' => 'Completed',
'CreatedTime' => '2018-10-26T16:36:19.000Z',
)),
),
)),
))
SimpleXMLElement::__set_state(array(
'Timestamp' => '2018-10-26T16:36:44.157Z',
'Ack' => 'Success',
'Version' => '1083',
'Build' => 'E1083_CORE_APIXO_18856776_R1',
'PaginationResult' =>
SimpleXMLElement::__set_state(array(
'TotalNumberOfEntries' => '1',
)),
'OrderArray' =>
SimpleXMLElement::__set_state(array(
'Order' =>
SimpleXMLElement::__set_state(array(
'OrderID' => '26348797',
'OrderStatus' => 'Completed',
'CreatedTime' => '2018-10-26T15:40:25.000Z',
)),
)),
))
这就是我在循环中使用 echo header('content-type: text/xml'); echo $xml->asXML(); 时得到的输出。
<?xml version="1.0" encoding="UTF-8"?>
<GetOrdersResponse xmlns="urn:ebay:apis:eBLBaseComponents">
<Timestamp>2018-10-26T16:42:57.532Z</Timestamp>
<Ack>Success</Ack>
<Version>1083</Version>
<Build>E1083_CORE_APIXO_18856776_R1</Build>
<PaginationResult>
<TotalNumberOfEntries>1</TotalNumberOfEntries>
</PaginationResult>
<OrderArray>
<Order>
<OrderID>11306025</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T14:38:44.000Z</CreatedTime>
</Order>
</OrderArray>
</GetOrdersResponse>
<?xml version="1.0" encoding="UTF-8"?>
<GetOrdersResponse xmlns="urn:ebay:apis:eBLBaseComponents">
<Timestamp>2018-10-26T16:42:58.218Z</Timestamp>
<Ack>Success</Ack>
<Version>1083</Version>
<Build>E1083_CORE_APIXO_18856776_R1</Build>
<PaginationResult>
<TotalNumberOfEntries>4</TotalNumberOfEntries>
</PaginationResult>
<OrderArray>
<Order>
<OrderID>39168452</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T14:38:53.000Z</CreatedTime>
</Order>
<Order>
<OrderID>37219192</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:36:41.000Z</CreatedTime>
</Order>
<Order>
<OrderID>37198277</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:35:01.000Z</CreatedTime>
</Order>
<Order>
<OrderID>37185515</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T16:24:19.000Z</CreatedTime>
</Order>
</OrderArray>
</GetOrdersResponse>
<?xml version="1.0" encoding="UTF-8"?>
<GetOrdersResponse xmlns="urn:ebay:apis:eBLBaseComponents">
<Timestamp>2018-10-26T16:42:58.861Z</Timestamp>
<Ack>Success</Ack>
<Version>1083</Version>
<Build>E1083_CORE_APIXO_18856776_R1</Build>
<PaginationResult>
<TotalNumberOfEntries>4</TotalNumberOfEntries>
</PaginationResult>
<OrderArray>
<Order>
<OrderID>16283499</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:13:21.000Z</CreatedTime>
</Order>
<Order>
<OrderID>16283499</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:36:40.000Z</CreatedTime>
</Order>
<Order>
<OrderID>16275107</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T16:09:40.000Z</CreatedTime>
</Order>
<Order>
<OrderID>16258277</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T16:36:19.000Z</CreatedTime>
</Order>
</OrderArray>
</GetOrdersResponse>
<?xml version="1.0" encoding="UTF-8"?>
<GetOrdersResponse xmlns="urn:ebay:apis:eBLBaseComponents">
<Timestamp>2018-10-26T16:42:59.253Z</Timestamp>
<Ack>Success</Ack>
<Version>1083</Version>
<Build>E1083_CORE_APIXO_18856776_R1</Build>
<PaginationResult>
<TotalNumberOfEntries>1</TotalNumberOfEntries>
</PaginationResult>
<OrderArray>
<Order>
<OrderID>26348797</OrderID>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:40:25.000Z</CreatedTime>
</Order>
</OrderArray>
</GetOrdersResponse>
我需要的是更改所有 <OrderID></OrderID> 节点以显示 <Test></Test> 并附加到其中的值，我用这个
foreach($auth_tokens as $key => $auth_token) {
$responses = curl_exec($connection);
$xml = simplexml_load_string($responses);
curl_close($connection);
$entries = $xml->PaginationResult->TotalNumberOfEntries;
$xml = $xml->OrderArray->Order;
if($entries == 0) {
continue;
} else {
foreach($xml as $key => $val) {
$val->Test = substr($val->OrderStatus, 0, 3) . $val->OrderID; // changes the <OrderID> node from <OrderID> to <Test> and appends the first 3 charachters from <OrderStatus> value to the <Test> value
unset($val->OrderID); // deletes the now empty <OrderID> node
} // end foreach
}
echo header('content-type: text/xml');
echo $xml->asXML();
} // end foreach
这输出正是我需要的，除了它只需要一个 parent 节点环绕它并且它只从每个响应输出 1 个订单。
<Order>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:36:41.000Z</CreatedTime>
<Test>Com372191926</Test>
</Order>
<Order>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:13:21.000Z</CreatedTime>
<Test>Com16283499</Test>
</Order>
<Order>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:40:25.000Z</CreatedTime>
<Test>Com26348797</Test>
</Order>
但我似乎无法围绕此获得 parent 节点，因为我无法成功保存此数据并在 foreach 循环之外访问它。我很接近！
您可以尝试这样的操作，将响应聚合到一个 XML 字符串中，然后在转换之前将其包装在根元素中：
$auth_tokens = array('tok1', 'tok2', 'tok3', 'tok4');
$xmlstr = '';
foreach($auth_tokens as $auth_token) { // 4 iterations in loop
$response = curl_exec($connection); // API xml response
$xmlstr .= $response; // add response to XML
}
$xml = simplexml_load_string("<Orders>$xmlstr</Orders>");
header('content-type: text/xml');
echo $xml->asXML();
更新
如果 XML 响应包含 <?xml ... > headers，则上述代码不起作用。快速而肮脏的解决方法是使用 preg_replace 将它们删除，即将 $xmlstr .= $response; 更改为
$xmlstr .= preg_replace('/<\?xml[^>]*>/', '', $response);
"correct" 修复是单独处理 XML 响应并将它们作为 children 添加到根文档。这可以使用 DomDocument:
$xml = new DomDocument();
$xml->loadXML('<Orders></Orders>');
$xmlroot = $xml->documentElement;
$respdoc = new DomDocument();
foreach($auth_tokens as $auth_token) { // 4 iterations in loop
$response = curl_exec($connection); // API xml response
$respdoc->loadXML($response); // create a domDocument
$resproot = $respdoc->documentElement; // get the root element
$resproot = $xml->importNode($resproot, true); // import into XML
$xmlroot->appendChild($resproot);
}
header('content-type: text/xml');
echo $xml->saveXML();
我想通了这个问题。我需要在子 foreach 循环中连接 .=，而不是在父循环中。然后我就可以访问循环外的数据了。而且我必须使用 $val->asXML() 将数据保存到一个变量中。请注意下面代码中的注释行。
foreach($auth_tokens as $key => $auth_token) { // 4 iterations in loop
$responses = curl_exec($connection); // API xml response
$xml = simplexml_load_string($responses); // loaded xml into SimpleXMLElement object
curl_close($connection);
$entries = $xml->PaginationResult->TotalNumberOfEntries;
$xml = $xml->OrderArray->Order; // Just get the Order elements
if($entries == 0) {
continue;
} else {
foreach($xml as $key => $val) {
$val->Test = substr($val->OrderStatus, 0, 3) . $val->OrderID; // changes the <OrderID> node from <OrderID> to <Test> and appends the first 3 charachters from <OrderStatus> value to the <Test> value
unset($val->OrderID); // deletes the <OrderID> node
$orders .= $val->asXML(); // concatenate here in child loop instead of parent foreach
} // end child foreach
}
} // end parent foreach
$xml = new DomDocument('1.0', 'utf-8');
$xml->preserveWhiteSpace = false;
$xml->formatOutput = true;
$xml->loadXML('<Orders>' . $orders . '</Orders>'); // able to add my parent node <orders></Orders>
$xml->save('test.xml', LIBXML_NOEMPTYTAG); // saves xml to file
header('content-type: text/xml');
echo $xml->saveXML(); // saves xml for display
输出正是我需要的，没有太多开销，而且格式也很好。
<?xml version="1.0"?>
<Orders>
<Order>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:36:41.000Z</CreatedTime>
<Test>Com10789</Test>
</Order>
<Order>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:13:21.000Z</CreatedTime>
<Test>Com10790</Test>
</Order>
<Order>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:40:25.000Z</CreatedTime>
<Test>Com141570</Test>
</Order>
<Order>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:36:41.000Z</CreatedTime>
<Test>Com141571</Test>
</Order>
<Order>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:13:21.000Z</CreatedTime>
<Test>Com141572</Test>
</Order>
<Order>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:36:41.000Z</CreatedTime>
<Test>Com19992</Test>
</Order>
<Order>
<OrderStatus>Completed</OrderStatus>
<CreatedTime>2018-10-26T15:40:25.000Z</CreatedTime>
<Test>Com19993</Test>
</Order>
</Orders>