php - Regex for replacing a specific tag inside any html tag

Question

In one of my application i need to strip out or remove a particular tag inside all html tag attributes like :

 <div<del>class</del>=<del>"example"</del>>

I want to remove all these <del> tag which is generated from server side script. I am using the following preg_replace:

  preg_replace("/<.*?>/", "", $string);

But it is replacing all the tags and i only want to replace the tag within html tags. I dont want to remove all <del> tags. I only want to remove those <del> tags which are appearing inside html tags.

Answer 1

你可以这样做：

preg_replace('/(?>(?><|\G(?<!^))[^<>]++\K|\G(?<!^))<[^>]++>/', '', '<div class=<some_tag>"example"</some_tag>>');

图案细节：

(?>            # non capturing group (atomic)
    (?>
        <|\G(?<!^)   # < or a contigous match
    )
    [^<>]++\K  # common content of the good tag until a bracket (\K reset the match)
  |            # OR
    \G(?<!^)   # a contiguous match not at the start of the string
)              # close the non capturing group
<[^>]++>       # the ugly tag to remove

Answer 2

使用正则表达式：

<[^<>]+>

哪里[^<>]+是匹配所有字符的否定类，除了<>.

正则表达式101演示

但是，如果您有 html 标签，但里面没有这些标签，它也会替换 html 标签。

如果是这样，你可以试试这个正则表达式：

(?<==|")<[^<>]+>

编辑：如果您的问题是具体的，您应该更具体地提出您的问题。

只需使用正则表达式替换：

<\/?del>

Answer 3

您可以使用此功能

strip_tags('<div<del>class</del>=<del>"example"</del>>', '<del>');

如果您使用 strip_tags函数，您将获得以下输出

'<div class="example">'

祝你好运...