php 从 SimpleXML 访问 @attribute
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Accessing @attribute from SimpleXML
提问by benjy
I am having a problem accessing the @attributesection of my SimpleXML object. When I var_dumpthe entire object, I get the correct output, and when I var_dumpthe rest of the object (the nested tags), I get the correct output, but when I follow the docs and var_dump$xml->OFFICE->{'@attributes'}, I get an empty object, despite the fact that the first var_dumpclearly shows that there are attributes to output.
我在访问@attributeSimpleXML 对象的部分时遇到问题。当我var_dump整个对象时，我得到了正确的输出，当我var_dump得到了对象的其余部分（嵌套标签）时，我得到了正确的输出，但是当我按照文档和var_dump$xml->OFFICE->{'@attributes'}，我得到一个空对象，尽管事实上第一个var_dump清楚地表明有输出属性。
Anyone know what I am doing wrong here/how I can make this work?
任何人都知道我在这里做错了什么/我如何才能做到这一点？
采纳答案by Niels Bom
You can get the attributes of an XML element by calling the attributes() function on an XML node. You can then var_dump the return value of the function.
您可以通过在 XML 节点上调用 attributes() 函数来获取 XML 元素的属性。然后您可以 var_dump 函数的返回值。
More info at php.net http://php.net/simplexmlelement.attributes
更多信息在 php.net http://php.net/simplexmlelement.attributes
Example code from that page:
该页面的示例代码：
$xml = simplexml_load_string($string);
foreach($xml->foo[0]->attributes() as $a => $b) {
echo $a,'="',$b,"\"\n";
}
回答by zysoft
Try this
尝试这个
$xml->attributes()->Token
回答by Bora
I used before so many times for getting @attributeslike below and it was a little bit longer.
我以前用过很多次来@attributes像下面这样，而且时间有点长。
$att = $xml->attributes();
echo $att['field'];
It should be more easy and you can get attributes following format only at once:
它应该更容易，您只能一次获得以下格式的属性：
Standard Way - Array-Access Attributes (AAA)
标准方式 - 阵列访问属性 (AAA)
$xml['field'];
Other alternatives are:
其他替代方案是：
Right & Quick Format
正确且快速的格式
$xml->attributes()->{'field'};
Wrong Formats
错误的格式
$xml->attributes()->field;
$xml->{"@attributes"}->field;
$xml->attributes('field');
$xml->attributes()['field'];
$xml->attributes->['field'];
回答by Artefacto
$xml = <<<XML
<root>
<elem attrib="value" />
</root>
XML;
$sxml = simplexml_load_string($xml);
$attrs = $sxml->elem->attributes();
echo $attrs["attrib"]; //or just $sxml->elem["attrib"]
Use SimpleXMLElement::attributes.
使用SimpleXMLElement::attributes.
Truth is, the SimpleXMLElement get_propertieshandler lies big time. There's no property named "@attributes", so you can't do $sxml->elem->{"@attributes"}["attrib"].
事实是，SimpleXMLElementget_properties处理程序很重要。没有名为“@attributes”的属性，所以你不能这样做$sxml->elem->{"@attributes"}["attrib"]。
回答by Alix Axel
You can just do:
你可以这样做：
echo $xml['token'];
回答by Cory Collier
If you're looking for a list of these attributes though, XPath will be your friend
如果您正在寻找这些属性的列表，XPath 将是您的朋友
print_r($xml->xpath('@token'));
回答by t2m
It helped me to convert the result of simplexml_load_file($file) into a JSON Structure and decode it back:
它帮助我将 simplexml_load_file($file) 的结果转换为 JSON 结构并将其解码：
$xml = simplexml_load_file("$token.xml");
$json = json_encode($xml);
$xml_fixed = json_decode($json);
$try1 = $xml->structure->{"@attributes"}['value'];
print_r($try1);
>> result: SimpleXMLElement Object
(
)
$try2 = $xml_fixed->structure->{"@attributes"}['value'];
print_r($try2);
>> result: stdClass Object
(
[key] => value
)
回答by Gerard ONeill
Unfortunately I have a unique build (stuck with Gentoo for the moment) of PHP 5.5, and what I found was that
不幸的是，我有一个独特的 PHP 5.5 构建（目前坚持使用 Gentoo），我发现的是
$xml->tagName['attribute']
was the only solution that worked. I tried all of Bora's methods above, including the 'Right & Quick' format, and they all failed.
是唯一有效的解决方案。我尝试了上述所有 Bora 的方法，包括“Right & Quick”格式，但都失败了。
The fact that this is the easiest format is a plus, but didn't enjoy thinking I was insane trying all of the formats others were saying worked.
这是最简单的格式这一事实是一个加分项，但我并不喜欢认为我尝试其他人所说的所有格式都行得通。
Njoy for what its worth (did I mention unique build?).
Njoy 的价值（我提到过独特的构建吗？）。
