Cut out a necessary piece from a web page?

Question

PHP

The situation is this:
I'm using Simple HTML DOM.
Given:

$result = simple_html_dom т.е. html код всей страницы
$selector = 'div.column_1.column_3'

Required:
Cut $result into 3 parts where:
1st part - before $selector = 'div.column_1.column_3'
2nd part - $selector = 'div.column_1.column_3'
3rd part - after $selector = 'div.column_1.column_3 '
Tell me how to do this?

Answer 1

Part 2 is most likely $html->find('div.column_1.column_3');, and 1 and 3 are unlikely to succeed with this library (unless these next_sibling() and prev_sibling() methods, although it is unlikely ) better with regex

Answer 2

You can use this library: simplehtmldom.sourceforge.net
and take only what you need at once, without splitting.
And if you still answer your question, then these are regular expressions and nothing better than them.
Read "regular expressions" and functions for working with them, for example preg_match()

Answer 3

butteff, if you carefully look at my question, then I indicated it there. I will most likely use regular expressions, but inside, there is already a library to change.