如何截断HTML到一定数量的字符？ [英] How to truncate HTML to certain number of characters?

问题描述

我有一些以某种博客格式显示的内容（有些来自外部来源，有些是特别编写的）。我想在一定数量的字符后切断文本，所以目前我正在这样做：

 <？= substr（strip_tags（$ a ['content']），0,400）？> 
  

问题是，这会丢失所有的格式，而我只会得到一大块文本。但是，如果我不去掉标签，显然有些标签会被关闭并且会弄乱布局。

在X个字符之后截断的方法是什么，但也保留一些基本的格式？ 解决方案

不相信如果这是你的问题的最佳方法，但它是一个简单一个，如果你只关心保留1或2个标签在html中保留一些基本格式，那么它就可以工作。

所以，你可以这样做：find要保留的标签，并用一些独特的字符组合替换它们，然后在截断字符串后，用您最初替换它们的标签查找/替换您创建的唯一字符串组合。

  $ content = str_replace（< br />，\\\
，$ a ['content']）; 
 $ content = substr（strip_tags（$ content），0，400）; 
 echo str_replace（\\\
，< br />，$ content）; 
  

I have some content (some from an external source, some specially written) that is displayed in a kind of blog format. I want to cut off the text after a certain number of characters, so currently I'm doing this:

<?=substr( strip_tags($a['content']), 0, 400 )?>

The problem is, this loses all the formatting and I just get one massive blob of text. But if I don't strip the tags, obviously some tags will go unclosed and mess up the layout.

What would be a good way to truncate after X number of characters, but also keep some basic formatting?

解决方案

Not convinced if this is the best approach for your problem, but it is a simple one, and would work if you're only concerned about preserving 1 or 2 tags to retain some basic formatting in the html.

So, you could do something like: find the tags you want to keep and replace them with some unique combination of characters, then after truncating the string, find/replace the unique string combination you created with the tag you originally replaced them with.

$content = str_replace("<br/>", "\n", $a['content']);
$content = substr(strip_tags($content), 0, 400); 
echo str_replace("\n", "<br/>", $content);

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