SimpleXML-使用先前声明的名称空间添加新节点-如何? [英] SimpleXML - add a new node using a namespace previously declared - how?
问题描述
我想在<domain:create>
节点的非常特定的位置添加一个孩子(因此,我也使用DOM不仅是simpleXML).
I would like to add a child, on a very specific place (so I'm also using DOM and not only simpleXML) for <domain:create>
node.
我试图在simpleXML构造上使用$ ns属性.
I have tried to use the $ns attribute on simpleXML construct.
$nsNode = new SimpleXMLElement('<domain:ns>', $options = 0, $ns='urn:ietf:params:xml:ns:domain-1.0');
//transform the target into dom object for manipulation
$nodeRegistrantDom = dom_import_simplexml($nodeRegistrant);
但是我得到了:
I/O警告:无法加载外部 实体
"<domain:ns>"
I/O warning : failed to load external entity
"<domain:ns>"
我尝试在创建元素后注册前缀, 但是在此之后我不使用xpath,所以这是一个毫无用处的尝试...
I've tried to register the prefix after creating the element, but I use no xpath after this, so this was quite a useless try...
//creates the simpleXML object node to be inserted.
$nsNode = new SimpleXMLElement('<ns/>');
//this will not work, because we will not use xpath after it :s
$nsNode->registerXPathNamespace('domain', 'urn:ietf:params:xml:ns:domain-1.0');
由于xml是从文件加载的,并且是ns声明的那个文件,也许我们应该从该文件中获取它?
Since the xml is loaded from a file, and that file as this ns declared, maybe we should grab it from that file?
这里是以上内容的全部,以便我们可以更好地理解上下文: 我们正在加载一个包含总体结构的XML文件:
Here is an overall of the above, so that we can better understand the context: We are loading a XML file that contains an overall structure:
$xmlObj = simplexml_load_file('EppCreateDomain.xml');
我们将获取一个用作目标的元素:
They we will grab an element that we will use as a target:
//grab the target.
$nodeRegistrant = $xmlObj->command->create->children(self::OBJ_URI_DOMAIN)->create->registrant;
//transform the target into a dom object for later manipulation
$nodeRegistrantDom = dom_import_simplexml($nodeRegistrant);
//we try to use simpleXML to create the node that we want to add after our target.
$nsNode = new SimpleXMLElement('<domain:ns>');
//grabs the node and all his children (none in this case), by importing the node we want to add,
//into the root object element that contains the <domain:registrant> node.
$nsNodeDom = $nodeRegistrantDom->ownerDocument->importNode(dom_import_simplexml($nsNode), true);
$nodeRegistrantDom->parentNode->insertBefore($nsNodeDom, $nodeRegistrantDom->nextSibling);
$simpleXmlNsNode = simplexml_import_dom($nsNodeDom);
现在,我们将节点放置在适当的位置. 并转换为simpleXML之后,我们现在可以轻松地添加一些子项并填充xml文件的其余部分.
Now we have our node placed on a proper place. And converted to simpleXML so, we can now easily add some children and fill the rest of the xml file..
$hostAttr = $simpleXmlNsNode->addChild('domain:hostAttr');
$hostName = $hostAttr->addChild('domain:hostName');
请咨询, MEM
推荐答案
<?php
// test document, registrant as first/last element and somewhere in between
$xmlObj = new SimpleXMLElement('<epp>
<domain:create xmlns:domain="urn:someurn">
<domain:name></domain:name>
<domain:registrant></domain:registrant>
<domain:contact></domain:contact>
</domain:create>
<domain:create xmlns:domain="urn:someurn">
<domain:name></domain:name>
<domain:contact></domain:contact>
<domain:registrant></domain:registrant>
</domain:create>
<domain:create xmlns:domain="urn:someurn">
<domain:registrant></domain:registrant>
<domain:name></domain:name>
<domain:contact></domain:contact>
</domain:create>
</epp>');
foreach( $xmlObj->children("urn:someurn")->create as $create ) {
$registrant = $create->registrant;
insertAfter($registrant, 'domain:ns', 'some text');
}
echo $xmlObj->asXML();
function insertAfter(SimpleXMLElement $prevSibling, $qname, $val) {
$sd = dom_import_simplexml($prevSibling);
$newNode = $sd->ownerDocument->createElement($qname, $val);
$newNode = $sd->parentNode->insertBefore($newNode, $sd->nextSibling);
return simplexml_import_dom($newNode);
}
打印
<?xml version="1.0"?>
<epp>
<domain:create xmlns:domain="urn:someurn">
<domain:name/>
<domain:registrant/><domain:ns>some text</domain:ns>
<domain:contact/>
</domain:create>
<domain:create xmlns:domain="urn:someurn">
<domain:name/>
<domain:contact/>
<domain:registrant/><domain:ns>some text</domain:ns>
</domain:create>
<domain:create xmlns:domain="urn:someurn">
<domain:registrant/><domain:ns>some text</domain:ns>
<domain:name/>
<domain:contact/>
</domain:create>
</epp>
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