PHP的 - 如何检索div标签属性值 [英] php - how can I retrieve a div tag attribute value

问题描述

我有一个可以隐藏或不隐藏的div，具体取决于用户。该div有一个名为'attrLoc'的属性。我希望能够从php中检索该属性值。希望有人能帮忙。预先感谢您的回复。干杯。 Marc。

我的HTML：

 < div id = btn-locclass =hiddenattrLoc =1> 
 ... 
< / div> 
  

解决方案

XPath 是查询XML结构的标准。然而，请注意，如果你想从一个不受信任的源代码解析HTML，那么这个源代码的HTML并不是非常完整的，你应该更喜欢 http://www.php.net/manual/en/domdocument.loadhtml.phprel =noreferrer> DOMDocument :: loadHTML（） SimpleXML 变体，特别是 simplexml_load_string 。

举例

 <？php 
 $ html ='
< div id =btn-locclass =hiddenattrLoc =1> 
 ... 
< / div>'; 
 
 $ doc = DOMDocument :: loadHTML（$ html）; 
 $ xpath = new DOMXPath（$ doc）; 
 $ query =// div [@ id ='btn-loc']; 
 $ entries = $ xpath-> query（$ query）; 
 foreach（$条目为$条目）{
 echoFound：。 $入门>的getAttribute（ attrloc）; 
} 
  

希望它有帮助！

I have a div which can be hidden or not, depending on the user. That div has an attribute called 'attrLoc'. What I would like is to be abble to retrieve that attribute value from php. Hope someone can help. Thank you in advance for your replies. Cheers. Marc.

My HTML:

<div id="btn-loc" class="hidden" attrLoc="1">
...
</div>

解决方案

XPath is quite the standard for querying XML structures.

However, note that if you want to parse HTML from an untrusted source, that is a source where HTML is not absolutely well formed, you should prefer DOMDocument::loadHTML() to SimpleXML variants, in particular simplexml_load_string.

For Example

<?php
$html = '
<div id="btn-loc" class="hidden" attrLoc="1">
  ...
</div>';

$doc = DOMDocument::loadHTML($html);
$xpath = new DOMXPath($doc);
$query = "//div[@id='btn-loc']";
$entries = $xpath->query($query);
foreach ($entries as $entry) {
  echo "Found: " . $entry->getAttribute("attrloc");
}

Hope it helps!

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