3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $obj = (object)[null]; var_dump($obj, $obj->${0});
Output for 7.1.0
Notice: Undefined variable: 0 in /in/Q6AFE on line 4 Notice: Undefined property: stdClass::$ in /in/Q6AFE on line 4 object(stdClass)#1 (1) { [0]=> NULL } NULL
Output for 7.0.0 - 7.0.14
Notice: Undefined variable: 0 in /in/Q6AFE on line 4 Fatal error: Uncaught Error: Cannot access empty property in /in/Q6AFE:4 Stack trace: #0 {main} thrown in /in/Q6AFE on line 4
Process exited with code 255.
Output for hhvm-3.12.0
Fatal error: Cannot access empty property in /in/Q6AFE on line 4
Process exited with code 255.
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.4.0 - 5.6.28
Notice: Undefined variable: 0 in /in/Q6AFE on line 4 Fatal error: Cannot access empty property in /in/Q6AFE on line 4
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/Q6AFE on line 3
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/Q6AFE on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/Q6AFE on line 3
Process exited with code 255.