3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $course_id = "SW_3200R50S14C"; $matches = array(); preg_match("[0-9]+",$course_id, $matches); print_r($matches);
Output for 4.3.11 - 5.6.28, 7.0.0 - 7.1.0
Warning: preg_match(): Unknown modifier '+' in /in/lPq3C on line 6 Array ( )
Output for hhvm-3.12.0
Warning: Unknown modifier '+': [[0-9]+] in /in/lPq3C on line 6 Array ( )
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.3.0 - 4.3.10
Warning: Unknown modifier '+' in /in/lPq3C on line 6 Array ( )