3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $s = '<iframe width="800">sfsdfsdf</iframe>'; echo preg_replace('~width=["]?(\d+)["]?~', '$1', $s);
based on u81Od
Output for 4.3.0 - 7.1.0
<iframe 800>sfsdfsdf</iframe>