3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $arr = []; var_dump( @$arr['foo'], $arr['foo'], (string) null );
based on XLiEi
Output for 5.4.0 - 7.1.0
Notice: Undefined index: foo in /in/siqaV on line 5 NULL NULL string(0) ""
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/siqaV 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/siqaV on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/siqaV on line 2
Process exited with code 255.