3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $variable = 'toto'; $toto = 'bar'; echo $$variable."\n"; // bar
based on tR3Kp
Output for 4.3.0 - 5.0.5, 5.1.1 - 7.1.0
bar
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/Rc2W5 on line 6
Process exited with code 255.