Online PHP editor | refs for lFjmK

<?php $html = '<p>hello<a href="https://www.youtu.be/watch?v=7HknMcG2qYo">world</a></p><p>hello<a href="https://youtube.com/watch?v=37373o">world</a></p>'; $pattern = '/https?:\/\/(www\.)?youtu(\.be|\com)\/[a-zA-Z0-9\?=]*/i'; preg_match_all($pattern, $html, $matches); // print_r($matches); $first_found_youtube = $matches[0][0]; echo $first_found_youtube;