3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $string = base64_encode(random_bytes(10)); // about 14 chars
based on 4kWoK
Output for 7.0.0 - 7.2.0
Output for 5.3.20 - 5.6.28
Fatal error: Call to undefined function random_bytes() in /in/GdnNX on line 2
Process exited with code 255.