[英]PHP updating xml CDATA fields with DOMdocument
我有以下XML數據:
<?xml version="1.0" encoding="utf-8"?>
<source>
<publisher>some-data</publisher>
<publisherurl>some-data</publisherurl>
<lastBuildDate>a-date</lastBuildDate>
<element>
<sub-element><![CDATA[some-data]]></sub-element>
</element>
</source>
我正在嘗試使用PHP的內置DOMdocument解析器來更新sub-element
內的文本。
我試過了:
$dom=new DOMDocument();
$dom->load("document.xml");
$ele=$root->getElementsByTagName('element');
foreach ($ele as $e) {
$e->getElementsByTagName('sub-element')->item(0)->nodeValue = "new val";
}
這種工作,但它刪除了CDATA並僅用new-val
替換了它。 我想保留CDATA字段,所以嘗試了以下操作:
$dom=new DOMDocument();
$dom->load("document.xml");
$ele=$root->getElementsByTagName('element');
foreach ($ele as $e) {
$sub=$e->getElementsByTagName('sub-element');
foreach($sub->childNodes as $child) {
if ($child->nodeType == XML_CDATA_SECTION_NODE) {
$child->nodeValue = 'new-val';
}
}
}
似乎應該可以使用,但是PHP返回以下通知
未定義的屬性:DOMNodeList :: $ childNodes
感覺自己走在正確的道路上,但我無法弄清楚自己在做什么錯。 有誰知道如何解決?
我的最終目標輸出是:
<?xml version="1.0" encoding="utf-8"?>
<source>
<publisher>some-data</publisher>
<publisherurl>some-data</publisherurl>
<lastBuildDate>a-date</lastBuildDate>
<element>
<sub-element><![CDATA[new-val]]></sub-element>
</element>
</source>
您需要與firstChild
進行比較
$xml = '<?xml version="1.0" encoding="utf-8"?>
<source>
<publisher>some-data</publisher>
<publisherurl>some-data</publisherurl>
<lastBuildDate>a-date</lastBuildDate>
<element>
<sub-element><![CDATA[some-data]]></sub-element>
</element>
<element>
<sub-element>some-other-data</sub-element>
</element>
</source>';
$dom = new DOMDocument();
$dom->loadXML($xml);
$ele=$dom->getElementsByTagName('element');
foreach ($ele as $e) {
$item = $e->getElementsByTagName('sub-element')->item(0);
if($item->firstChild->nodeType == XML_CDATA_SECTION_NODE) { //<------
//it's CDATA do whatever
$item->firstChild->nodeValue = "new val";
} else {
//it's not , do something else
$item->nodeValue = "new val";
}
}
echo "<pre>";
print_r(htmlentities($dom->saveXML()));
echo "</pre>";
輸出:
<?xml version="1.0" encoding="utf-8"?>
<source>
<publisher>some-data</publisher>
<publisherurl>some-data</publisherurl>
<lastBuildDate>a-date</lastBuildDate>
<element>
<sub-element><![CDATA[new val]]></sub-element>
</element>
<element>
<sub-element>new val</sub-element>
</element>
</source>
PS:如果不必區分CDATA與否,只需使用firstChild
foreach ($ele as $e) {
$item = $e->getElementsByTagName('sub-element')->item(0);
$item->firstChild->nodeValue = "new val";
}
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