3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $lala; var_dump(isset($lala)); var_dump(null == $lala); var_dump(null === $lala);
Output for 5.1.0 - 5.6.28, 7.0.0 - 7.1.0
bool(false) Notice: Undefined variable: lala in /in/iIc3T on line 6 bool(true) Notice: Undefined variable: lala in /in/iIc3T on line 7 bool(true)
Output for 5.0.4 - 5.0.5, hhvm-3.10.0 - 3.12.0
Notice: Undefined variable: lala in /in/iIc3T on line 3 bool(false) Notice: Undefined variable: lala in /in/iIc3T on line 6 bool(true) Notice: Undefined variable: lala in /in/iIc3T on line 7 bool(true)
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: lala in /in/iIc3T on line 3 bool(false) Notice: Undefined variable: lala in /in/iIc3T on line 6 bool(true) Notice: Undefined variable: lala in /in/iIc3T on line 7 bool(true)