3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php print floor(log(0.5, 100)); //
based on 2kHpC
Output for 4.3.0 - 5.0.5, 5.1.1 - 7.2.0
-1
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/TRlkP on line 5
Process exited with code 255.