3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $lala; var_dump( isset($lala), null == $lala, null === $lala );
Output for 7.0.0 - 7.1.0
Notice: Undefined variable: lala in /in/lMll5 on line 7 Notice: Undefined variable: lala in /in/lMll5 on line 8 bool(false) bool(true) bool(true)
Output for hhvm-3.10.0 - 3.12.0
Notice: Undefined variable: lala in /in/lMll5 on line 3 Notice: Undefined variable: lala in /in/lMll5 on line 7 Notice: Undefined variable: lala in /in/lMll5 on line 8 bool(false) bool(true) bool(true)
Output for 5.5.0 - 5.6.28
Notice: Undefined variable: lala in /in/lMll5 on line 7 Notice: Undefined variable: lala in /in/lMll5 on line 9 bool(false) bool(true) bool(true)
Output for 4.3.0 - 5.4.45
bool(false) bool(true) bool(true)