3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = "A-MTP-"; $i = 1; $j=1; $s=1; while ($i < 4) { $ch="$ch" ; $ch=$ch."".$s; $$ch[]=""; while($j < 13) { $j++; } $i++; }
Output for 7.0.0 - 7.1.0
Notice: Undefined variable: ch in /in/SjCpn on line 8
Output for 4.3.2 - 5.6.28, hhvm-3.12.0
Fatal error: Cannot use [] for reading in /in/SjCpn on line 10
Process exited with code 255.
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot use [] for reading in /in/SjCpn on line 10