Remove everything in div tags with a certain class, along with this tag?

Question

PHP

Please help me to remove the request from the line: you need to remove: in order for it to remain - 1245, then everything that is not in the div tag with the qwe class needs to be removed.
1 2 <div class="qwe"><div>3</div></div> 4 5
<div class="qwe"><div>3</div></div>

Answer 1

who may need

preg_replace("/(<div class=\"qwe\">)(.*)(<\/div>)/",'',$text);