DOMDocument :: validate()问题 [英] DOMDocument::validate() problem

问题描述

我的PHP DOMDocument :: validate()有一个大问题，他似乎是在系统地询问DTD.

I have a big problem with the PHP DOMDocument::validate() who seems to ask the DTD systematically.

例如，当我想验证XHTML文档时，这是一个大问题.

It is a big problem when I whant to validate, for example, an XHTML document as explained here.

由于w3.org似乎拒绝了来自PHP服务器的所有请求，因此无法使用此方法来验证我的文档...

As w3.org seems to reject all request from a PHP server, it's impossible to validate my document with this method...

有什么解决办法吗?

多谢

这是一些精度:

/var/www/test.php:

/var/www/test.php :

<?php
$implementation = new DOMImplementation();

$dtd = $implementation->createDocumentType
       (
         'html',                                     // qualifiedName
         '-//W3C//DTD XHTML 1.0 Transitional//EN',   // publicId
         'http://www.w3.org/TR/xhtml1/DTD/xhtml1-'
           .'transitional.dtd'                       // systemId
       );

$document = $implementation->createDocument('', '', $dtd);

$document->validate();

[ http://] 127.0.0.1/test.php :

Warning: DOMDocument::validate(http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd): failed to open stream: HTTP request failed! HTTP/1.0 403 Forbidden
 in /var/www/test.php on line 14

Warning: DOMDocument::validate(): I/O warning : failed to load external entity "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" in /var/www/test.php on line 14

Warning: DOMDocument::validate(): Could not load the external subset "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" in /var/www/test.php on line 14

相关问题:

• 如何在php DOMDocument中导入XML字符串?(已解决)

• How to import XML string in a php DOMDocument ? (solved)

推荐答案

有一个Bug/FeatureRequest，用于DOMDocument::validate接受DTD作为字符串:

Like pointed out in the comments, there is a Bug/FeatureRequest for DOMDocument::validate to accept the DTD as a string:

• http://bugs.php.net/bug.php?id=48080

您可以自己托管DTD并相应地更改systemId，也可以为通过libxml完成​​的任何加载提供自定义流上下文.例如，提供UserAgent可以解决W3C的阻塞问题.您也可以通过这种方式添加代理.参见

You could host the DTD yourself and change the systemId accordingly or you can provide a custom stream context to any loading done through libxml. For instance, providing a UserAgent will get around the W3C's blocking. You could also add proxy this way. See

• libxml_set_streams_context() 和
• 可用的HTTP上下文选项列表

示例:

$di = new DOMImplementation;
$dom = $di->createDocument(
    'html',
    'html',
    $di->createDocumentType(
        'html',
        '-//W3C//DTD XHTML 1.0 Transitional//EN',
        'http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd'
    )
);
$opts = array(
    'http' => array(
        'user_agent' => 'PHP libxml agent',
    )
);
$context = stream_context_create($opts);
libxml_set_streams_context($context);

var_dump($dom->validate());

这将输出

Warning: DOMDocument::validate(): Element html content does not follow the DTD, expecting (head , body), got  

Warning: DOMDocument::validate(): Element html namespace name for default namespace does not match the DTD 

Warning: DOMDocument::validate(): Value for attribute xmlns of html is different from default "http://www.w3.org/1999/xhtml" 

Warning: DOMDocument::validate(): Value for attribute xmlns of html must be "http://www.w3.org/1999/xhtml" 

bool(false)

这篇关于DOMDocument :: validate()问题的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！