3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo file_get_contents(ini_get('hhvm.pid_file'));
Output for 5.2.9 - 5.6.28, 7.0.0 - 7.1.0
Warning: file_get_contents(): Filename cannot be empty in /in/Kq0vP on line 2
Output for hhvm-3.10.0 - 3.12.0
Warning: No such file or directory in /in/Kq0vP on line 2
Output for 4.3.0 - 5.2.8