blocks|key|5308882|text|好的XML工具将确保生成的XML文件能够正确地验证您正在使用的DTD。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5308883|好的XML工具还可以省去大量重复输入标记的工作。|5308884|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

Good XML tools will ensure that the resulting XML file properly validates against the DTD you are using.

Good XML tools also save a bunch of repetitive typing of tags.

blocks|key|782438|text|如果您正在处理少量的XML，那么手工处理也没什么坏处(只要您能避免输入错误)。但是，对于较大的文档，最好使用编辑器，它可以根据模式验证文档并防止输入错误。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|782439|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

If you're dealing with a small bit of XML, there's little harm in doing it by hand (as long as you can avoid typos). However, with larger documents you're frequently better off using an editor, which can validate your doc against the schema and protect against typos.

blocks|key|5309403|text|您可以使用DOM+extenstion，它在编写代码时会非常麻烦。我个人的观点是，从头开始编写XML文档的最有效方法是XMLWriter+extension，它是随PHP提供的，并且在最近的版本中是默认启用的。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|5309404|$w=new+XMLWriter();
$w->openMemory();
$w->startDocument('1.0','UTF-8');
$w->startElement("root");
++++$w->writeAttribute("ah",+"OK");
++++$w->text('Wow,+it+works!');
$w->endElement();
echo+htmlentities($w->outputMemory(true));|code-block|syntax|javascript|5309405|entityMap|0|LINK|mutability|MUTABLE|url|http://de3.php.net/manual/en/book.dom.php|1|http://de3.php.net/manual/en/intro.xmlwriter.php^0|5|E|0|1N|J|1|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@$A|T|B|U|1|V]|$A|W|B|X|1|Y]]|C|$]]|$1|D|3|E|5|F|7|Z|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|10|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]|Q|$5|L|M|N|C|$O|R]]]]

You could use the <a href="http://de3.php.net/manual/en/book.dom.php" rel="nofollow noreferrer">DOM extenstion</a> which can be quite cumbersome to code against. My personal opinion is that the most effective way to write XML documents from ground up is the <a href="http://de3.php.net/manual/en/intro.xmlwriter.php" rel="nofollow noreferrer">XMLWriter extension</a> that comes with PHP and is enabled by default in recent versions.

<pre><code>$w=new XMLWriter();
$w-&gt;openMemory();
$w-&gt;startDocument('1.0','UTF-8');
$w-&gt;startElement("root");
 $w-&gt;writeAttribute("ah", "OK");
 $w-&gt;text('Wow, it works!');
$w-&gt;endElement();
echo htmlentities($w-&gt;outputMemory(true));
</code></pre>

blocks|key|3898615|text|使用一个好的XML生成器将极大地减少由于笨手笨脚、注意力疏忽或任何其他人类弱点而导致的潜在错误。然而，有几种不同级别的机器辅助可供选择：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3898616|3898617|至少要使用程序员的文本编辑器，它可以高亮显示语法并自动缩进。只要注意到文本的颜色与您期望的不同，或者没有按照您期望的方式排列，就可能会出现您可能遗漏的输入错误。|ordered-list-item|3898618|更好的做法是，后退一步，将XML编写为您喜欢的任何语言的数据结构，而不是将该数据结构转换为XML。Perl为您提供了一些模块，如用于小型作业的轻量级XML::Simple或更大的XML::Generator；使用XML::Simple只需将您的内容安排到一个标准的Perl散列中，并通过适当的方法运行它。|offset|length|style|CODE|3898619|3898620|-steve|3898621|entityMap|0|LINK|mutability|MUTABLE|url|http://search.cpan.org/author/GRANTM/XML-Simple-2.18/lib/XML/Simple.pm|1|http://search.cpan.org/~bholzman/XML-Generator-1.01/Generator.pm^0|0|0|0|2Y|B|22|B|0|2H|E|1|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|10|8|@]|9|@]|A|$]]|$1|F|3|G|5|E|7|11|8|@$H|12|I|13|J|K]]|9|@$H|14|I|15|1|16]|$H|17|I|18|1|19]]|A|$]]|$1|L|3|-4|5|6|7|1A|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|1B|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|1C|8|@]|9|@]|A|$]]]|P|$Q|$5|R|S|T|A|$U|V]]|W|$5|R|S|T|A|$U|X]]]]

using a good XML generator will greatly reduce potential errors due to fat-fingering, lapse of attention, or whatever other human frailty. there are several different levels of machine assistance to choose from, however:

<ol>
<li>at the very least, use a programmer's text editor that does syntax highlighting and auto-indentation. just noticing that your text is a different color than you expect, or not lining up the way you expect, can tip you off to a typo you might otherwise have missed.</li>
<li>better yet, take a step back and write the XML as a data structure of whatever language you prefer, than convert that data structure to XML. Perl gives you modules such as the lightweight <a href="http://search.cpan.org/author/GRANTM/XML-Simple-2.18/lib/XML/Simple.pm" rel="nofollow noreferrer">XML::Simple</a> for small jobs or the heftier <a href="http://search.cpan.org/~bholzman/XML-Generator-1.01/Generator.pm" rel="nofollow noreferrer">XML::Generator</a>; using <code>XML::Simple</code> is just a matter of arranging your content into a standard Perl hash of hashes and running it through the appropriate method.</li>
</ol>

-steve

blocks|key|3053788|text|通过任何类型的字符串操作生成XML都为bug进入您的代码打开了大门。例如，如果$value包含一个与号，那么您发布的极其简单的示例将不会生成格式良好的XML。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3053789|XML中的边缘情况并不多，但是编写自己的代码来处理它们是浪费时间。(如果你不处理它们，你的代码总有一天会意外失败。没有人想要这样。)任何好的XML工具都会自动处理这些情况。|3053790|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

Producing XML via any sort of string manipulation opens the door for bugs to get into your code. The extremely simple example you posted, for instance, won't produce well-formed XML if $value contains an ampersand. 

There aren't a lot of edge cases in XML, but there are enough that it's a waste of time to write your own code to handle them. (And if you don't handle them, your code will unexpectedly fail someday. Nobody wants that.) Any good XML tool will automatically handle those cases.

blocks|key|779620|text|使用生成器。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|779621|使用生成器的好处是您拥有一致的标记，并且不会冒着弄错括号或引用或忘记编码的风险。这是至关重要的，因为这些错误直到运行时才会被发现，除非你有重要的测试来确保不是这样。|779622|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

Use the generator.

The advantage of using a generator is you have consistent markup and don't run the risk of fat-fingering a bracket or quote, or forgetting to encode something. This is crucial because these mistakes will not be found until runtime, unless you have significant tests to ensure otherwise.

blocks|key|782526|text|手写并不总是最佳实践，因为在大型XML中，您可能会写入错误的标记，并且很难找到错误的原因。因此，我建议使用XMl解析器来创建XML文件。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|782527|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

hand writing isn't always the best practice, because in large XML ou can write wrong tags and can be difficult to find the reason of an error. So I suggest to use XMl parsers to create XML files.

blocks|key|779880|text|速度可能是个问题。手写可以快得多。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|779881|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Speed may be an issue... handwritten can be a lot faster.

blocks|key|5309470|text|eclipse中的XML工具也非常有用。只需创建一个新的xml模式和文档，您就可以轻松地使用大多数图形工具。我想指出的是，事先了解模式是如何工作的将是有用的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5309471|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

The XML tools in eclipse are really useful too. Just create a new xml schema and document, and you can easily use most of the graphical tools. I do like to point out that a prior understanding of how schemas work will be of use.

blocks|key|5309274|text|总是使用某种工具。XML可能非常复杂，我知道PHP的人习惯于使用hackey的小东西，但是如果有人不使用System.XML来创建XML，那么在.NET世界中就会有巨大的代码气味。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5309275|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Always use a tool of some kind. XML can be very complex, I know that the PHP guys are used to working with hackey little stuff, but its a huge code smell in the .NET world if someone doesn't use System.XML for creating XML.

I have normally hand written xml like this:

<pre><code>&lt;tag&gt;&lt;?= $value ?&gt;&lt;/tag&gt;
</code></pre>

Having found tools such as simpleXML, should I be using those instead? What's the advantage of doing it using a tool like that?

When writing XML, is it better to hand write it, or to use a generator such as simpleXML in PHP?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我通常手写的xml是这样的：<tag><?= $value ?></tag>找到像simpleXML这样的工具后，我是否应该使用这些工具呢？使用这样的工具做的好处是什么？

问在编写XML时，是手动编写还是使用simpleXML之类的生成器更好？
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问在编写XML时，是手动编写还是使用simpleXML之类的生成器更好？EN

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问在编写XML时，是手动编写还是使用simpleXML之类的生成器更好？
EN