3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $ticket = 'skf243985hf2387bf87'; $isValid = true; if (empty($ticket) || '_' == $ticket || preg_match('/[^a-z0-9]+/i', $ticket)) { $isValid = false; } var_dump($isValid);
Output for 4.3.0 - 7.1.0
bool(true)