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); $matches = array(); preg_match("/R[0-9]+/",$course_id, $matches); print_r($matches);
Output for 4.3.0 - 7.1.0
Array ( [0] => 3200 ) Array ( [0] => R50 )