3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $filename = "Kehadiran Pada Bulan $tahun_program $bulan_program ".$_SESSION["kod_dun_program"]; $filename = str_replace(strtolower($filename), " ", "-"); echo $filename; ?>
Output for 5.6.0 - 5.6.30, 7.0.0 - 7.3.0alpha1
Notice: Undefined variable: tahun_program in /in/Us1gl on line 2 Notice: Undefined variable: bulan_program in /in/Us1gl on line 2 Notice: Undefined variable: _SESSION in /in/Us1gl on line 2 -
Output for hhvm-3.15.4
Notice: Undefined variable: tahun_program in /in/Us1gl on line 2 Notice: Undefined variable: bulan_program in /in/Us1gl on line 2 Notice: Undefined index: kod_dun_program in /in/Us1gl on line 2 -