什么会导致DOMDocument。从可访问的URL加载XML失败?

$doc = new DOMDocument();
if ($doc->load('http://foo.com/bar.xml')) {
  // good
} else {
  // wtf happened?
}

I can wget http://foo.com/bar.xml from the location where the PHP code is running, so I know the URL is accessible. I'm thinking it must be something other than an HTTP error.

我可以从PHP代码运行的位置获取http://foo.com/bar.xml，因此我知道URL是可访问的。我想一定是HTTP出错了。

I'm not sure what else could be causing the failure. Maybe a parsing issue? The XML appears to be valid (and passes W3C's validation test). As far as I can tell from the documentation, there's no way to determine why the load failure occurred.

我不确定还有什么可能导致失败。也许一个解析的问题?XML看起来是有效的(并且通过了W3C的验证测试)。从文档中我可以看出，没有办法确定为什么会发生负载故障。

Here's the XML:

这是XML:

 <response> 
  <version>8</version> 
  <minversion>1</minversion> 
  <url>api.asp?</url> 
 </response>

2 个解决方案

#1

I finally narrowed it down to a PHP configuration setting called allow_url_fopen, which was set to Off on the server running the script.

我最终将它缩小到一个名为allow_url_fopen的PHP配置设置，它在运行脚本的服务器上设置为Off。

I modified the php.ini file to enable this setting:

我修改了php。ini文件启用此设置:

allow_url_fopen = On

And now DOMDocument.load can load XML from a remote URL.

现在DOMDocument。load可以从远程URL加载XML。

WARNING: apparently there are some security issues with keeping this setting on permanently.

警告:显然，将此设置永久打开存在一些安全问题。

#2

Add this:

添加:

    libxml_use_internal_errors ( true );
    $doc = new DOMDocument();
    $doc -> recover = true;
    $doc -> strictErrorChecking = false;

#1