3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php strtr( base64_encode( random_bytes(9) ), '+/', '-_' );
Output for 7.0.0 - 7.2.0
Output for 5.3.19 - 5.6.28
Fatal error: Call to undefined function random_bytes() in /in/92tsg on line 5
Process exited with code 255.