3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $array = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]; for ($i=2; $i > -1; $i--) { print_r($array[$i][$j]); }
based on aIGuL
Output for 5.4.0 - 5.6.28, 7.0.0 - 7.1.0
Notice: Undefined variable: j in /in/YAqrb on line 4 Notice: Undefined index: in /in/YAqrb on line 4 Notice: Undefined variable: j in /in/YAqrb on line 4 Notice: Undefined index: in /in/YAqrb on line 4 Notice: Undefined variable: j in /in/YAqrb on line 4 Notice: Undefined index: in /in/YAqrb on line 4
Output for hhvm-3.10.0 - 3.12.0
Notice: Undefined index: in /in/YAqrb on line 4 Notice: Undefined index: in /in/YAqrb on line 4 Notice: Undefined index: in /in/YAqrb on line 4
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/YAqrb on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/YAqrb on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/YAqrb on line 2
Process exited with code 255.