[英]How to move namespace declaration to top?
Code: 码:
<?php
$ns = 'http://example.com';
$rss = new SimpleXMLElement('<?xml version="1.0" encoding="UTF-8" ?>'.
'<rss/>');
$rss->registerXPathNamespace('example', $ns);
$rss->addAttribute('version', '2.0');
$rss->addChild('example:foo', '1', $ns);
$rss->addChild('example:bar', '2', $ns);
echo '<pre>'.htmlspecialchars($rss->asXML()).'</pre>';
?>
Output: 输出:
<?xml version="1.0" encoding="UTF-8"?>
<rss version="2.0"><example:foo xmlns:example="http://example.com">1</example:foo><example:bar xmlns:example="http://example.com">2</example:bar></rss>
Desired output: 所需的输出:
<?xml version="1.0" encoding="UTF-8"?>
<rss version="2.0" xmlns:example="http://example.com"><example:foo>1</example:foo><example:bar>2</example:bar></rss>
How do I tell SimpleXML to move the namespace declaration to <rss/>
? 如何告诉SimpleXML将名称空间声明移至
<rss/>
?
You should add xmlns:example="http://example.com"
to xml tag 您应该将
xmlns:example="http://example.com"
到xml标记中
Try this code: 试试这个代码:
<?php
$ns='http://example.com';
$rss=new SimpleXMLElement('<?xml version="1.0" encoding="UTF-8" ?><rss xmlns:example="http://example.com"></rss>');
$rss->registerXPathNamespace('example',$ns);
$rss->addAttribute('version','2.0');
$rss->addChild('example:foo','1',$ns);
$rss->addChild('example:bar','2',$ns);
echo '<pre>'.htmlspecialchars($rss->asXML()).'</pre>';
?>
Output: 输出:
<?xml version="1.0" encoding="UTF-8"?>
<rss xmlns:example="http://example.com" version="2.0"><example:foo>1</example:foo><example:bar>2</example:bar></rss>
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