How to add a regular expression to search inside a tag?

Question

Regular Expressions

Help me people, I can’t figure out how to write a rhyme.
I need to find everything that is between the tags
<div class="WYSIWYG articlePage"> </div>
https://regex101.com/r/3YMWU6/1
I also tried like this

<([^\s]+)[\s+]class="(.*?)articlePage"[^>]*>([\s\S]*)<\/\1>

But everything goes wrong if the desired tag is nested in another tag...

<div><div class="WYSIWYG articlePage"> </div></div>

Answer 1

In short, this is how it works

#<div\s+class="(.*?)articlePage">[^<>]*(<div[^>]*>(?:[^<>]*|(?1))*</div>)[^<>]*</div>#si

Answer 2

Regular expressions are not well suited for parsing recursively nested structures.
To work with HTML, it is better to use specialized libraries/functions, such as Simple DOM Parser for PHP or AngleSharp for C#.