3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $string= "Went for an awesome bike ride today! #biking"; preg_match_all('/#(\w+)/',$string, $matches); foreach ($matches[2] as $tag) { echo $tag; }
Output for 5.3.0 - 7.1.0
Notice: Undefined offset: 2 in /in/Gh8aF on line 6 Warning: Invalid argument supplied for foreach() in /in/Gh8aF on line 6
Output for 5.2.1 - 5.2.17
Notice: Undefined offset: 2 in /in/Gh8aF on line 6 Warning: Invalid argument supplied for foreach() in /in/Gh8aF on line 6
Output for 4.3.0 - 4.3.10, 4.4.0 - 5.2.0
Warning: Invalid argument supplied for foreach() in /in/Gh8aF on line 6
Output for 4.3.11