使用PHP中的自定义DTD验证XML
[英]Validate XML using a custom DTD in PHP
问题描述
是否有一种方法（没有安装任何库）使用PHP中的自定义DTD验证XML？
4 个解决方案
解决方案1
5 已采纳 2008-09-19 13:50:23
Take a look at PHP's DOM , especially DOMDocument::schemaValidate and DOMDocument::validate . 
看一下PHP的DOM ，特别是DOMDocument :: schemaValidate和DOMDocument :: validate 。
The example for DOMDocument::validate is fairly simple: DOMDocument :: validate的示例非常简单：
<?php
$dom = new DOMDocument;
$dom->Load('book.xml');
if ($dom->validate()) {
echo "This document is valid!\n";
}
?>
解决方案2
3 2011-06-30 09:48:18
If you have the dtd in a string, you can validate against it by using a data wrapper for the dtd: 如果你有一个字符串中的dtd，你可以通过使用dtd的数据包装器来验证它：
$xml = '<?xml version="1.0"?>
<!DOCTYPE note SYSTEM "note.dtd">
<note>
<to>Tove</to>
<from>Jani</from>
<heading>Reminder</heading>
<body>Don\'t forget me this weekend!</body>
</note>';
$dtd = '<!ELEMENT note (to,from,heading,body)>
<!ELEMENT to (#PCDATA)>
<!ELEMENT from (#PCDATA)>
<!ELEMENT heading (#PCDATA)>
<!ELEMENT body (#PCDATA)>';
$root = 'note';
$systemId = 'data://text/plain;base64,'.base64_encode($dtd);
$old = new DOMDocument;
$old->loadXML($xml);
$creator = new DOMImplementation;
$doctype = $creator->createDocumentType($root, null, $systemId);
$new = $creator->createDocument(null, null, $doctype);
$new->encoding = "utf-8";
$oldNode = $old->getElementsByTagName($root)->item(0);
$newNode = $new->importNode($oldNode, true);
$new->appendChild($newNode);
if (@$new->validate()) {
echo "Valid";
} else {
echo "Not valid";
}
解决方案3
3 2011-09-12 14:15:15
My interpretation of the original question is that we have an "on board" XML file that we want to validate against an "on board" DTD file. 我对原始问题的解释是，我们有一个“板载”XML文件，我们想要根据“板载”DTD文件进行验证。 So here's how I would implement the "interpolate a local DTD inside the DOCTYPE element" idea expressed in comments by both Soren and PayamRWD: 因此，我将如何实现Soren和PayamRWD在评论中表达的“插入DOCTYPE元素内的本地DTD”的想法：
public function validate($xml_realpath, $dtd_realpath=null) {
$xml_lines = file($xml_realpath);
$doc = new DOMDocument;
if ($dtd_realpath) {
// Inject DTD inside DOCTYPE line:
$dtd_lines = file($dtd_realpath);
$new_lines = array();
foreach ($xml_lines as $x) {
// Assume DOCTYPE SYSTEM "blah blah" format:
if (preg_match('/DOCTYPE/', $x)) {
$y = preg_replace('/SYSTEM "(.*)"/', " [\n" . implode("\n", $dtd_lines) . "\n]", $x);
$new_lines[] = $y;
} else {
$new_lines[] = $x;
}
}
$doc->loadXML(implode("\n", $new_lines));
} else {
$doc->loadXML(implode("\n", $xml_lines));
}
// Enable user error handling
libxml_use_internal_errors(true);
if (@$doc->validate()) {
echo "Valid!\n";
} else {
echo "Not valid:\n";
$errors = libxml_get_errors();
foreach ($errors as $error) {
print_r($error, true);
}
}
}
Note that error handling has been suppressed for brevity, and there may be a better/more general way to handle the interpolation. 请注意，为简洁起见，已经抑制了错误处理，并且可能有更好/更通用的方法来处理插值。 But I have actually used this code with real data, and it works with PHP version 5.2.17. 但我实际上已将此代码与真实数据一起使用，并且它适用于PHP 5.2.7版。
解决方案4
0 2011-03-03 16:11:08
Trying to complete "owenmarshall" answer: 试图完成“owenmarshall”答案：
in xml-validator.php: 在xml-validator.php中：
add html, header, body, ... 添加HTML，标题，正文，...
<?php
$dom = new DOMDocument; <br/>
$dom->Load('template-format.xml');<br/>
if ($dom->validate()) { <br/>
echo "This document is valid!\n"; <br/>
}
?>
template-format.xml: 模板format.xml：
<?xml version="1.0" encoding="utf-8"?>
<!-- DTD to Validate against (format example) -->
<!DOCTYPE template-format [ <br/>
<!ELEMENT template-format (template)> <br/>
<!ELEMENT template (background-color, color, font-size, header-image)> <br/>
<!ELEMENT background-color (#PCDATA)> <br/>
<!ELEMENT color (#PCDATA)> <br/>
<!ELEMENT font-size (#PCDATA)> <br/>
<!ELEMENT header-image (#PCDATA)> <br/>
]>
<!-- XML example -->
<template-format>
<template>
<background-color></background-color> <br/>
<color></color> <br/>
<font-size></font-size> <br/>
<header-image></header-image> <br/>
</template>
</template-format>
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