文档末尾的额外内容 PHP 和 XML
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/8850120/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Extra content at the end of the document PHP and XML
提问by Jeff
I having a strange problem when I'm trying to produce an XML file with PHP. The problems is that, a strange question mark appears at the end of the source code. And I get the error: "Extra content at the end of the document"
我在尝试用 PHP 生成 XML 文件时遇到了一个奇怪的问题。问题是，在源代码的末尾出现了一个奇怪的问号。我收到错误消息：“文档末尾有额外的内容”
I'm running this script:
我正在运行这个脚本：
<?php
header("Content-Type: application/xml");
echo "<?xml version=\"1.0\"?>";
?>
<Module>
<ModulePrefs title="Ngram Extractor"
author="interedition team"
description="Ngram Extractor"
scrolling="true"/>
<Content type="html">
Test
</Content>
</Module>?
When I open this is a browser, I get the state error and the source code looks like this. Notice the strange question mark at the end.
当我打开这是浏览器时，出现状态错误，源代码如下所示。注意结尾处奇怪的问号。
<?xml version="1.0"?>
<Module>
<ModulePrefs title="Ngram Extractor"
author="interedition team"
description="Ngram Extractor"
scrolling="true"/>
<Content type="html">
Test
</Content>
</Module>?
Please help.
请帮忙。
回答by Jpsy
You have a zero width spacecharacter at the end of your file - UTF-8 code E2 80 8B. It is placed right after </Module>. Have a look at your file in hex mode.
This extra character prevents your browser from recognizing this as valid XML and - depending on the browser in use - shows up as a question mark or does not show up at all.
您的文件末尾有一个零宽度空格字符 - UTF-8 代码 E2 80 8B。它紧跟在 之后</Module>。以十六进制模式查看您的文件。这个额外的字符会阻止您的浏览器将其识别为有效的 XML，并且 - 根据使用的浏览器 - 显示为问号或根本不显示。
Remove that extra character and you will be fine.
删除那个额外的字符，你会没事的。
回答by Ramil Amerzyanov
May be you use UTF-8 with BOM encoding. Check it
可能是您将 UTF-8 与 BOM 编码一起使用。核实
回答by Jeff
I don't really have answer, accept that my editor wasn't showing the question mark. But one I opened the file in notepad2, lo and behold, the question mark was there. Very strange. Thanks for your help.
我真的没有答案，接受我的编辑没有显示问号。但是我在notepad2中打开了文件，瞧，问号就在那里。很奇怪。谢谢你的帮助。
