3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $$test = 12; var_dump($$test);
Output for 5.0.4 - 7.1.0
Notice: Undefined variable: test in /in/N4VeH on line 2 Notice: Undefined variable: test in /in/N4VeH on line 3 int(12)
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: test in /in/N4VeH on line 2 Notice: Undefined variable: test in /in/N4VeH on line 3 int(12)