本文介绍了如何展开RFC 822的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在尝试编写vCard解析器,但在展开行时遇到了麻烦.如您在此处看到的: http://www.faqs.org/rfcs/rfc822.html查找展开",表示以下所有内容均有效:
I am trying to write a vCard Parser and am having trouble unfolding lines.As you can see here: http://www.faqs.org/rfcs/rfc822.html look for "unfolding" it says that all the following are valid:
Long string<return>
<tab>continue
Long string<return>
<tab>(n*<tab>)continue
Long string<return>
<space>continue
Long string<return>
<space>(n*<space>)continue
我该如何展开?为此有正则表达式吗?如果正在编写类,我将使用PHP:)
How do I unfold this? Is there a regex for this? I am using PHP if a class has been written I will use that :)
推荐答案
您可以使用它来删除这些折叠:
You could use this to remove those foldings:
$output = preg_replace('/\r\n(?:[ \t]+)/', '', $input);
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