blocks|key|3291671|text|根据我从documentation收集到的信息，处理由此方法发出的警告非常棘手，因为它们不是由libxml扩展生成的，因此不能由libxml_get_last_error()处理。您可以使用错误抑制运算符并检查false的返回值...|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3291672|if+(@$xdoc->load($url)+===+false)
++++//+...handle+it|code-block|syntax|javascript|3291673|...or寄存器an+error+handler+which+throws+an+exception+on+error|3291674|function+exception_error_handler($errno,+$errstr,+$errfile,+$errline+)+{
++++throw+new+ErrorException($errstr,+0,+$errno,+$errfile,+$errline);
}|3291675|然后抓住它。|3291676|entityMap|0|LINK|mutability|MUTABLE|url|http://www.php.net/manual/en/domdocument.load.php|1|http://php.net/manual/en/class.errorexception.php^0|1S|N|2X|5|4|D|0|0|0|8|1F|1|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@$9|11|A|12|B|C]|$9|13|A|14|B|C]]|D|@$9|15|A|16|1|17]]|E|$]]|$1|F|3|G|5|H|7|18|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|19|8|@]|D|@$9|1A|A|1B|1|1C]]|E|$]]|$1|M|3|N|5|H|7|1D|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|1E|8|@]|D|@]|E|$]]|$1|Q|3|-4|5|6|7|1F|8|@]|D|@]|E|$]]]|R|$S|$5|T|U|V|E|$W|X]]|Y|$5|T|U|V|E|$W|Z]]]]

From what I can gather from the <a href="http://www.php.net/manual/en/domdocument.load.php" rel="noreferrer">documentation</a>, handling warnings issued by this method is tricky because they are not generated by the libxml extension and thus cannot be handled by <code>libxml_get_last_error()</code>. You could either use the error suppression operator and check the return value for <code>false</code>...

<pre><code>if (@$xdoc-&gt;load($url) === false)
 // ...handle it
</code></pre>

...or register <a href="http://php.net/manual/en/class.errorexception.php" rel="noreferrer">an error handler which throws an exception on error</a>:

<pre><code>function exception_error_handler($errno, $errstr, $errfile, $errline ) {
 throw new ErrorException($errstr, 0, $errno, $errfile, $errline);
}
</code></pre>

and then catch it.

blocks|key|3291683|text|来自php.net|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3291684|3291685|如果将空字符串作为文件名传递或命名为空文件，则会生成警告。此警告不是由libxml生成的，无法使用libxml的错误处理函数进行处理。|blockquote|3291686|3291687|3291688|在您的生产环境中，不应该向用户显示错误。他们不需要看到它们，所以考虑到这一点，你可以使用...|3291689|$xdoc+=+new+DOMDocument();
if+(+$xdoc->load($url)+)+{
++++//+valid
}
else+{
++++//+invalid
}|code-block|syntax|javascript|3291690|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|R|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|S|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|T|8|@]|9|@]|A|$]]|$1|G|3|-4|5|6|7|U|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|V|8|@]|9|@]|A|$]]|$1|J|3|K|5|L|7|W|8|@]|9|@]|A|$M|N]]|$1|O|3|-4|5|6|7|X|8|@]|9|@]|A|$]]]|P|$]]

From php.net

<blockquote>
 If an empty string is passed as the
 filename or an empty file is named, a
 warning will be generated. This
 warning is not generated by libxml and
 cannot be handled using libxml's error
 handling functions.
</blockquote>

In your production environment you shouldn't have errors displayed to the user. They don't need to see them so taking this into account you can use...

<pre><code>$xdoc = new DOMDocument();
if ( $xdoc-&gt;load($url) ) {
 // valid
}
else {
 // invalid
}
</code></pre>

blocks|key|324938|text|set_error_handler(function($number,+$error){
++++if+(preg_match('/%5EDOMDocument::loadXML:+(.%2B)$/',+$error,+$m)+===+1)+{
++++++++throw+new+Exception($m[1]);
++++}
});

$xml+=+new+DOMDocument();
$xml->loadXML($xmlData);

restore_error_handler();|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|324939|这对我在PHP5.3中是有效的。但是如果你没有使用loadXML，你可能需要做一些修改。|unstyled|offset|length|style|CODE|324940|entityMap^0|0|P|7|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|N|8|@$G|O|H|P|I|J]]|9|@]|A|$]]|$1|K|3|-4|5|F|7|Q|8|@]|9|@]|A|$]]]|L|$]]

<pre><code>set_error_handler(function($number, $error){
 if (preg_match('/^DOMDocument::loadXML: (.+)$/', $error, $m) === 1) {
 throw new Exception($m[1]);
 }
});

$xml = new DOMDocument();
$xml-&gt;loadXML($xmlData);

restore_error_handler();
</code></pre>

That works for me in PHP 5.3. But if you're not using <code>loadXML</code>, you might need to do some modifications.

blocks|key|327878|text|要禁用引发错误，请执行以下操作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|327879|$internal_errors+=+libxml_use_internal_errors(true);

$dom+=+new+DOMDocument();
//+etc...

libxml_use_internal_errors($internal_errors);|code-block|syntax|javascript|327880|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|$]]

To disable throwing errors:

<pre><code>$internal_errors = libxml_use_internal_errors(true);

$dom = new DOMDocument();
// etc...

libxml_use_internal_errors($internal_errors);
</code></pre>

blocks|key|3078393|text|对我来说，下面的方法很管用|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3078394|$feed+=+new+DOMDocument();++
$res=+@$feed->load('http://www.astrology.com/horoscopes/daily-extended.rss');
if($res==1){
+++++++++++//do+sth
++++++++++}|code-block|syntax|javascript|3078395|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|$]]

For me , following did the trick

<pre><code>$feed = new DOMDocument(); 
$res= @$feed-&gt;load('http://www.astrology.com/horoscopes/daily-extended.rss');
if($res==1){
 //do sth
 }
</code></pre>

In my application I am loading xml from url in order to parse it.
But sometimes this url may not be valid. In this case I need to handle errors.
I have the following code:

<pre><code>$xdoc = new DOMDocument();
try{
 $xdoc-&gt;load($url); // This line causes Warning: DOMDocument::load(...)
 // [domdocument.load]: failed to open stream: 
 // HTTP request failed! HTTP/1.1 404 Not Found in ...
} catch (Exception $e) {
 $xdoc = null;
}

if($xdoc == null){
 // Handle
} else {
 // Proceed
}
</code></pre>

I know I probably doing it wrong, but what's a correct way to handle this kind of exceptions? I don't want to see error messages on my page.

The manual for DOMDocument::load() says: 

<blockquote>
 If an empty string is passed as the
 filename or an empty file is named, a
 warning will be generated. This
 warning is not generated by libxml and
 cannot be handled using libxml's error
 handling functions.
</blockquote>

But there is no information on how to handle it.

Thanks.

PHP DOMDocument error handling

在我的应用程序中，我从url加载xml以便对其进行解析。但有时该url可能无效。在这种情况下，我需要处理错误。我有以下代码：$xdoc = new DOMDocument();try{  $xdoc->load($url); // This line causes Warning: DOMDocument::load(...

问PHP DOMDocument错误处理
EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问PHP DOMDocument错误处理EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问PHP DOMDocument错误处理
EN