3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $s = '<iframe width=800><embed width=300>fdgdfg</embed>sfsdfsdf</iframe>'; $matches = array(); var_dump( preg_match('~width=["\']?(\d+)["\']?~', $s, $matshes) ); var_dump($matshes);
based on XXghr
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
int(1) array(2) { [0]=> string(9) "width=800" [1]=> string(3) "800" }