blocks|key|1204061|text|您可以通过调用XML节点上的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。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1204062|有关更多信息，请访问php.net+http://php.net/simplexmlelement.attributes|offset|length|1204063|来自该页面的示例代码：|1204064|$xml+=+simplexml_load_string($string);
foreach($xml->foo[0]->attributes()+as+$a+=>+$b)+{
++++echo+$a,'="',$b,"\"\n";
}|code-block|syntax|javascript|1204065|entityMap|0|LINK|mutability|MUTABLE|url|http://php.net/simplexmlelement.attributes^0|0|I|16|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@$D|W|E|X|1|Y]]|A|$]]|$1|F|3|G|5|6|7|Z|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|10|8|@]|9|@]|A|$K|L]]|$1|M|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

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.

More info at php.net
<a href="http://php.net/simplexmlelement.attributes" rel="noreferrer">http://php.net/simplexmlelement.attributes</a>

Example code from that page:

<pre><code>$xml = simplexml_load_string($string);
foreach($xml-&gt;foo[0]-&gt;attributes() as $a =&gt; $b) {
 echo $a,'="',$b,"\"\n";
}
</code></pre>

blocks|key|1204236|text|尝尝这个|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1204237|$xml->attributes()->Token|code-block|syntax|javascript|1204238|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Try this

<pre><code>$xml-&gt;attributes()-&gt;Token
</code></pre>

blocks|key|1204323|text|我以前使用过很多次来获取@attributes，就像下面这样，而且它有点长。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1204324|$att+=+$xml->attributes();
echo+$att['field'];|code-block|syntax|javascript|1204325|它应该更简单，并且你可以一次只获取以下格式的属性：|1204326|标准方式-数组-访问属性(AAA)|1204327|$xml['field'];|1204328|其他替代方案包括：|1204329|右键快速格式化(&Q)|1204330|$xml->attributes()->{'field'};|1204331|格式错误|1204332|$xml->attributes()->field;
$xml->{"@attributes"}->field;
$xml->attributes('field');
$xml->attributes()['field'];
$xml->attributes->['field'];|1204333|entityMap^0|C|B|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|12|8|@$9|13|A|14|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|15|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|16|8|@]|D|@]|E|$]]|$1|M|3|N|5|6|7|17|8|@]|D|@]|E|$]]|$1|O|3|P|5|H|7|18|8|@]|D|@]|E|$I|J]]|$1|Q|3|R|5|6|7|19|8|@]|D|@]|E|$]]|$1|S|3|T|5|6|7|1A|8|@]|D|@]|E|$]]|$1|U|3|V|5|H|7|1B|8|@]|D|@]|E|$I|J]]|$1|W|3|X|5|6|7|1C|8|@]|D|@]|E|$]]|$1|Y|3|Z|5|H|7|1D|8|@]|D|@]|E|$I|J]]|$1|10|3|-4|5|6|7|1E|8|@]|D|@]|E|$]]]|11|$]]

I used before so many times for getting <code>@attributes</code> like below and it was a little bit longer.

<pre><code>$att = $xml-&gt;attributes();
echo $att['field'];
</code></pre>

It should be more easy and you can get attributes following format only at once:

<h3>Standard Way - Array-Access Attributes (AAA)</h3>

<pre><code>$xml['field'];
</code></pre>

Other alternatives are:

<h3>Right &amp; Quick Format</h3>

<pre><code>$xml-&gt;attributes()-&gt;{'field'};
</code></pre>

<h3>Wrong Formats</h3>

<pre><code>$xml-&gt;attributes()-&gt;field;
$xml-&gt;{"@attributes"}-&gt;field;
$xml-&gt;attributes('field');
$xml-&gt;attributes()['field'];
$xml-&gt;attributes-&gt;['field'];
</code></pre>

blocks|key|1204100|text|$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"]|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1204101|使用SimpleXMLElement::attributes。|unstyled|offset|length|style|CODE|1204102|事实是，SimpleXMLElement+get_properties处理程序在很大程度上说谎了。没有名为"@attributes“的属性，所以你不能做$sxml->elem->{"@attributes"}["attrib"]。|1204103|entityMap|0|LINK|mutability|MUTABLE|url|http://www.php.net/manual/en/simplexmlelement.attributes.php|1|http://wiki.php.net/internals/engine/objects#get_properties^0|0|2|S|2|S|0|0|L|E|24|12|L|E|1|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|X|8|@$G|Y|H|Z|I|J]]|9|@$G|10|H|11|1|12]]|A|$]]|$1|K|3|L|5|F|7|13|8|@$G|14|H|15|I|J]|$G|16|H|17|I|J]]|9|@$G|18|H|19|1|1A]]|A|$]]|$1|M|3|-4|5|F|7|1B|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]|U|$5|P|Q|R|A|$S|V]]]]

<pre><code>$xml = &lt;&lt;&lt;XML
&lt;root&gt;
&lt;elem attrib="value" /&gt;
&lt;/root&gt;
XML;

$sxml = simplexml_load_string($xml);
$attrs = $sxml-&gt;elem-&gt;attributes();
echo $attrs["attrib"]; //or just $sxml-&gt;elem["attrib"]
</code></pre>

Use <a href="http://www.php.net/manual/en/simplexmlelement.attributes.php" rel="noreferrer"><code>SimpleXMLElement::attributes</code></a>.

Truth is, the SimpleXMLElement <a href="http://wiki.php.net/internals/engine/objects#get_properties" rel="noreferrer"><code>get_properties</code></a> handler lies big time. There's no property named "@attributes", so you can't do <code>$sxml-&gt;elem-&gt;{"@attributes"}["attrib"]</code>.

blocks|key|1204144|text|你可以这样做：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1204145|echo+$xml['token'];|code-block|syntax|javascript|1204146|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You can just do:

<pre><code>echo $xml['token'];
</code></pre>

blocks|key|1204224|text|但是，如果您正在寻找这些属性的列表，XPath将是您的朋友|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1204225|print_r($xml->xpath('@token'));|code-block|syntax|javascript|1204226|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

If you're looking for a list of these attributes though, XPath will be your friend

<pre><code>print_r($xml-&gt;xpath('@token'));
</code></pre>

blocks|key|1419564|text|它帮助我将simplexml_load_file($file)的结果转换成JSON结构并解码回来：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1419565|$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
)|code-block|syntax|javascript|1419566|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

It helped me to convert the result of simplexml_load_file($file) into a JSON Structure and decode it back:

<pre><code>$xml = simplexml_load_file("$token.xml");
$json = json_encode($xml);
$xml_fixed = json_decode($json);

$try1 = $xml-&gt;structure-&gt;{"@attributes"}['value'];
print_r($try1);

&gt;&gt; result: SimpleXMLElement Object
(
)

$try2 = $xml_fixed-&gt;structure-&gt;{"@attributes"}['value'];
print_r($try2);

&gt;&gt; result: stdClass Object
(
 [key] =&gt; value
)
</code></pre>

blocks|key|1419539|text|不幸的是，我有一个独特的PHP5.5版本(暂时使用Gentoo+)，我发现|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1419540|+$xml->tagName['attribute']|code-block|syntax|javascript|1419541|是唯一有效的解决方案。我尝试了Bora上面的所有方法，包括“Right&Quick”格式，它们都失败了。|1419542|事实上，这是最简单的格式，这是一个加分，但我不喜欢认为我疯了，尝试了所有其他人说有效的格式。|1419543|Njoy的价值(我有提到独特的构建吗？)。|1419544|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Unfortunately I have a unique build (stuck with Gentoo for the moment) of PHP 5.5, and what I found was that

<pre><code> $xml-&gt;tagName['attribute']
</code></pre>

was the only solution that worked. I tried all of Bora's methods above, including the 'Right &amp; Quick' format, and they all failed.

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.

Njoy for what its worth (did I mention unique build?).

blocks|key|1204487|text|我想从外部xml文件中提取字符串(只是歌曲标题和艺术家姓名)：https://nostalgicfm.ro/NowOnAir.xml，这是xml的形式：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1204488|+<Schedule+System="Jazler">
+++++<Event+status="happening"+startTime="20:31:20"+eventType="song">
++++++++<Announcement+Display=""/>
++++++<Song+title="Let+It+Be+">
+++++++<Artist+name="Beatles">
++++++++<Media+runTime="265.186"/>
++++++++<Expire+Time="20:35:45"/>
+++++++</Artist>
++++++</Song>
+++++</Event>
++++</Schedule>|code-block|syntax|javascript|1204489|我尝试这段代码PHP，但我不知道如何提取名称和title...like“披头士-让它”|1204490|++<?php
++++$url+=+"https://nostalgicfm.ro/NowOnAir.xml";
++++$xml+=+simplexml_load_file($url);
++++print_r($xml);
++++?>|1204491|结果是一个对象：|1204492|+SimpleXMLElement+Object+(+[@attributes]+=>+Array+(+[System]+=>+Jazler+)+[Event]+=>+SimpleXMLElement+Object+(+[@attributes]+=>+Array+(+[status]+=>+happening+[startTime]+=>+20:51:21+[eventType]+=>+song+)+[Announcement]+=>+SimpleXMLElement+Object+(+[@attributes]+=>+Array+(+[Display]+=>+)+)+[Song]+=>+SimpleXMLElement+Object+(+[@attributes]+=>+Array+(+[title]+=>+If+You+Were+A+Sailboat+)+[Artist]+=>+SimpleXMLElement+Object+(+[@attributes]+=>+Array+(+[name]+=>+Katie+Melua+)+[Media]+=>+SimpleXMLElement+Object+(+[@attributes]+=>+Array+(+[runTime]+=>+228.732+)+)+[Expire]+=>+SimpleXMLElement+Object+(+[@attributes]+=>+Array+(+[Time]+=>+20:55:09+)+)+)+)+)+)+|1204493|entityMap|0|LINK|mutability|MUTABLE|url|https://nostalgicfm.ro/NowOnAir.xml^0|V|Z|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@$A|Z|B|10|1|11]]|C|$]]|$1|D|3|E|5|F|7|12|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|13|8|@]|9|@]|C|$]]|$1|K|3|L|5|F|7|14|8|@]|9|@]|C|$G|H]]|$1|M|3|N|5|6|7|15|8|@]|9|@]|C|$]]|$1|O|3|P|5|F|7|16|8|@]|9|@]|C|$G|H]]|$1|Q|3|-4|5|6|7|17|8|@]|9|@]|C|$]]]|R|$S|$5|T|U|V|C|$W|X]]]]

I want to extract string (just Song title and Artist name) from external xml file: <a href="https://nostalgicfm.ro/NowOnAir.xml" rel="nofollow noreferrer">https://nostalgicfm.ro/NowOnAir.xml</a>
This form of xml:
<pre><code> &lt;Schedule System=&quot;Jazler&quot;&gt;
 &lt;Event status=&quot;happening&quot; startTime=&quot;20:31:20&quot; eventType=&quot;song&quot;&gt;
 &lt;Announcement Display=&quot;&quot;/&gt;
 &lt;Song title=&quot;Let It Be &quot;&gt;
 &lt;Artist name=&quot;Beatles&quot;&gt;
 &lt;Media runTime=&quot;265.186&quot;/&gt;
 &lt;Expire Time=&quot;20:35:45&quot;/&gt;
 &lt;/Artist&gt;
 &lt;/Song&gt;
 &lt;/Event&gt;
 &lt;/Schedule&gt;
</code></pre>
I try this code PHP but i don't know how to extract name &amp; title...like &quot;Beatles - Let It Be&quot;
<pre><code> &lt;?php
 $url = &quot;https://nostalgicfm.ro/NowOnAir.xml&quot;;
 $xml = simplexml_load_file($url);
 print_r($xml);
 ?&gt;
</code></pre>
Result is an Oject:
<pre><code> SimpleXMLElement Object ( [@attributes] =&gt; Array ( [System] =&gt; Jazler ) [Event] =&gt; SimpleXMLElement Object ( [@attributes] =&gt; Array ( [status] =&gt; happening [startTime] =&gt; 20:51:21 [eventType] =&gt; song ) [Announcement] =&gt; SimpleXMLElement Object ( [@attributes] =&gt; Array ( [Display] =&gt; ) ) [Song] =&gt; SimpleXMLElement Object ( [@attributes] =&gt; Array ( [title] =&gt; If You Were A Sailboat ) [Artist] =&gt; SimpleXMLElement Object ( [@attributes] =&gt; Array ( [name] =&gt; Katie Melua ) [Media] =&gt; SimpleXMLElement Object ( [@attributes] =&gt; Array ( [runTime] =&gt; 228.732 ) ) [Expire] =&gt; SimpleXMLElement Object ( [@attributes] =&gt; Array ( [Time] =&gt; 20:55:09 ) ) ) ) ) ) 
</code></pre>

blocks|key|1204540|text|我自己解决了：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1204541|<?php+
$url+=+'https://nostalgicfm.ro/NowOnAir.xml';+
$xml+=+simplexml_load_file($url);+
foreach+(+$xml->Event->Song->Artist->attributes()+as+$tag+=>+$value+);+
foreach+(+$xml->Event->Song->attributes()+as+$tag+=>+$value1+)+{+
echo+$value."+-+".$value1.PHP_EOL;+}+
?>|code-block|syntax|javascript|1204542|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Resolved it myself:
<pre><code>&lt;?php 
$url = 'https://nostalgicfm.ro/NowOnAir.xml'; 
$xml = simplexml_load_file($url); 
foreach ( $xml-&gt;Event-&gt;Song-&gt;Artist-&gt;attributes() as $tag =&gt; $value ); 
foreach ( $xml-&gt;Event-&gt;Song-&gt;attributes() as $tag =&gt; $value1 ) { 
echo $value.&quot; - &quot;.$value1.PHP_EOL; } 
?&gt;
</code></pre>

I am having a problem accessing the <code>@attribute</code> section of my SimpleXML object. When I <code>var_dump</code> the entire object, I get the correct output, and when I <code>var_dump</code> the rest of the object (the nested tags), I get the correct output, but when I follow the docs and <code>var_dump</code> <code>$xml-&gt;OFFICE-&gt;{'@attributes'}</code>, I get an empty object, despite the fact that the first <code>var_dump</code> clearly shows that there are attributes to output.

Anyone know what I am doing wrong here/how I can make this work?

Accessing @attribute from SimpleXML

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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访问我的SimpleXML对象的@attribute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对象的其余部分(嵌套标记)时，我得到了正确的输出，但是当我遵循文档和var_dump $xml->OFFICE->{'@attributes'}时，我得到了一个空对象，尽管第一个var_dump清楚地表明有要输出的属性。有人知道我在这里做错了什么吗/我如何才能

问从SimpleXML访问@attribute
EN

回答 10

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