blocks|key|1285799|text|可以使用set_error_handler安装临时错误处理程序|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1285800|class+ErrorTrap+{
++protected+$callback;
++protected+$errors+=+array();
++function+__construct($callback)+{
++++$this->callback+=+$callback;
++}
++function+call()+{
++++$result+=+null;
++++set_error_handler(array($this,+'onError'));
++++try+{
++++++$result+=+call_user_func_array($this->callback,+func_get_args());
++++}+catch+(Exception+$ex)+{
++++++restore_error_handler();++++++++
++++++throw+$ex;
++++}
++++restore_error_handler();
++++return+$result;
++}
++function+onError($errno,+$errstr,+$errfile,+$errline)+{
++++$this->errors[]+=+array($errno,+$errstr,+$errfile,+$errline);
++}
++function+ok()+{
++++return+count($this->errors)+===+0;
++}
++function+errors()+{
++++return+$this->errors;
++}
}|code-block|syntax|javascript|1285801|用法：|1285802|//+create+a+DOM+document+and+load+the+HTML+data
$xmlDoc+=+new+DomDocument();
$caller+=+new+ErrorTrap(array($xmlDoc,+'loadHTML'));
//+this+doesn't+dump+out+any+warnings
$caller->call($fetchResult);
if+(!$caller->ok())+{
++var_dump($caller->errors());
}|1285803|entityMap|0|LINK|mutability|MUTABLE|url|http://www.php.net/set_error_handler^0|4|H|4|H|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]]|D|@$9|Z|A|10|1|11]]|E|$]]|$1|F|3|G|5|H|7|12|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|13|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|14|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|15|8|@]|D|@]|E|$]]]|P|$Q|$5|R|S|T|E|$U|V]]]]

You can install a temporary error handler with <a href="http://www.php.net/set_error_handler" rel="noreferrer"><code>set_error_handler</code></a>

<pre><code>class ErrorTrap {
 protected $callback;
 protected $errors = array();
 function __construct($callback) {
 $this-&gt;callback = $callback;
 }
 function call() {
 $result = null;
 set_error_handler(array($this, 'onError'));
 try {
 $result = call_user_func_array($this-&gt;callback, func_get_args());
 } catch (Exception $ex) {
 restore_error_handler(); 
 throw $ex;
 }
 restore_error_handler();
 return $result;
 }
 function onError($errno, $errstr, $errfile, $errline) {
 $this-&gt;errors[] = array($errno, $errstr, $errfile, $errline);
 }
 function ok() {
 return count($this-&gt;errors) === 0;
 }
 function errors() {
 return $this-&gt;errors;
 }
}
</code></pre>

Usage:

<pre><code>// create a DOM document and load the HTML data
$xmlDoc = new DomDocument();
$caller = new ErrorTrap(array($xmlDoc, 'loadHTML'));
// this doesn't dump out any warnings
$caller-&gt;call($fetchResult);
if (!$caller-&gt;ok()) {
 var_dump($caller-&gt;errors());
}
</code></pre>

blocks|key|1285846|text|打电话|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1285847|libxml_use_internal_errors(true);|code-block|syntax|javascript|1285848|在使用$xmlDoc->loadHTML()进行处理之前|offset|length|style|CODE|1285849|这会将libxml2+not+to+send错误和警告告知PHP。然后，为了检查错误并自己处理它们，您可以在准备好时咨询libxml_get_last_error()和/或libxml_get_errors()：|1285850|libxml_use_internal_errors(true);
$dom->loadHTML($html);
$errors+=+libxml_get_errors();
foreach+($errors+as+$error)+{
++++//+handle+the+errors+as+you+wish
}|1285851|entityMap|0|LINK|mutability|MUTABLE|url|http://www.php.net/manual/en/function.libxml-use-internal-errors.php|1|http://www.php.net/manual/en/function.libxml-get-last-error.php|2|http://www.php.net/manual/en/function.libxml-get-errors.php^0|0|0|3|J|0|B|B|0|1O|N|1|2E|J|2|0|0^^$0|@$1|2|3|4|5|6|7|12|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|13|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|14|8|@$I|15|J|16|K|L]]|9|@]|A|$]]|$1|M|3|N|5|6|7|17|8|@]|9|@$I|18|J|19|1|1A]|$I|1B|J|1C|1|1D]|$I|1E|J|1F|1|1G]]|A|$]]|$1|O|3|P|5|D|7|1H|8|@]|9|@]|A|$E|F]]|$1|Q|3|-4|5|6|7|1I|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|X]]|Y|$5|T|U|V|A|$W|Z]]|10|$5|T|U|V|A|$W|11]]]]

Call
<pre class="lang-php prettyprint-override"><code>libxml_use_internal_errors(true);
</code></pre>
prior to processing with with <code>$xmlDoc-&gt;loadHTML()</code>
This tells libxml2 <a href="http://www.php.net/manual/en/function.libxml-use-internal-errors.php" rel="nofollow noreferrer">not to send</a> errors and warnings through to PHP. Then, to check for errors and handle them yourself, you can consult <a href="http://www.php.net/manual/en/function.libxml-get-last-error.php" rel="nofollow noreferrer">libxml_get_last_error()</a> and/or <a href="http://www.php.net/manual/en/function.libxml-get-errors.php" rel="nofollow noreferrer">libxml_get_errors()</a> when you're ready:
<pre class="lang-php prettyprint-override"><code>libxml_use_internal_errors(true);
$dom-&gt;loadHTML($html);
$errors = libxml_get_errors();
foreach ($errors as $error) {
 // handle the errors as you wish
}
</code></pre>

blocks|key|1285904|text|设置选项"LIBXML_NOWARNING“和"LIBXML_NOERROR”也可以很好地工作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1285905|$dom->loadHTML($html,+LIBXML_NOWARNING+%7C+LIBXML_NOERROR);|code-block|syntax|javascript|1285906|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|$]]

Setting the options "LIBXML_NOWARNING" &amp; "LIBXML_NOERROR" works perfectly fine too:

<pre><code>$dom-&gt;loadHTML($html, LIBXML_NOWARNING | LIBXML_NOERROR);
</code></pre>

I need to parse some HTML files, however, they are not well-formed and PHP prints out warnings to. I want to avoid such debugging/warning behavior programatically. Please advise. Thank you!

Code:

<pre><code>// create a DOM document and load the HTML data
$xmlDoc = new DomDocument;
// this dumps out the warnings
$xmlDoc-&gt;loadHTML($fetchResult);
</code></pre>

This:

<pre><code>@$xmlDoc-&gt;loadHTML($fetchResult)
</code></pre>

can suppress the warnings but how can I capture those warnings programatically?

Disable warnings when loading non-well-formed HTML by DomDocument (PHP)

我需要解析一些HTML文件，但是，它们不是格式良好的，PHP会打印出警告。我想通过编程来避免这种调试/警告行为。请给我建议。谢谢!代码：// create a DOM document and load the HTML data$xmlDoc = new DomDocument;// this dumps out t...

问禁止使用DomDocument加载格式不正确的超文本标记语言时出现警告
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