3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $test = 11; $$test = 12; $testy = $$test[10]; var_dump($test, $$test);
Output for 7.0.0 - 7.1.0
int(11) int(12)
Output for 5.0.4 - 5.6.28, hhvm-3.10.0 - 3.12.0
Notice: Undefined variable: in /in/8GMci on line 4 int(11) int(12)
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: in /in/8GMci on line 4 int(11) int(12)