3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = array(); $a['qqq']++; echo $a['qqq'];
Output for 5.3.28 - 5.3.29, 5.4.18 - 5.6.28, 7.0.0 - 7.1.0
Notice: Undefined index: qqq in /in/l3IYT on line 4 1
Output for hhvm-3.10.0 - 3.12.0
1
Output for 5.3.0 - 5.3.27, 5.4.0 - 5.4.17
Notice: Undefined index: qqq in /in/X3HQd on line 4 1
Output for 4.3.1 - 5.2.17
Notice: Undefined index: qqq in /in/X3HQd on line 4 1
Output for 4.3.0
Notice: Undefined index: qqq in /in/l3IYT on line 4 1