3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $s= "123 '".$foo['nonexisting']."'"; $k = "123 '$foo[nonexisting]'"; echo $s;
Output for 5.0.4 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
Notice: Undefined variable: foo in /in/MnvSB on line 2 Notice: Undefined variable: foo in /in/MnvSB on line 3 123 ''
Output for hhvm-3.10.0
Notice: Undefined variable: foo in /in/MnvSB on line 3 Notice: Undefined variable: foo in /in/MnvSB on line -1 123 ''
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: foo in /in/MnvSB on line 2 Notice: Undefined variable: foo in /in/MnvSB on line 3 123 ''