3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php echo unpack('H*', random_bytes(10));
based on mciqV
Output for 7.0.0 - 7.2.0
Notice: Array to string conversion in /in/54lL9 on line 3 Array
Output for 5.3.20 - 5.6.28
Fatal error: Call to undefined function random_bytes() in /in/54lL9 on line 3
Process exited with code 255.