3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $n = new stdClass(); $n->dog = 'cat'; $d = 'dog'; echo $n->$dog;
Output for 7.1.0
Notice: Undefined variable: dog in /in/fNPEv on line 6 Notice: Undefined property: stdClass::$ in /in/fNPEv on line 6
Output for 7.0.0 - 7.0.14
Notice: Undefined variable: dog in /in/fNPEv on line 6 Fatal error: Uncaught Error: Cannot access empty property in /in/fNPEv:6 Stack trace: #0 {main} thrown in /in/fNPEv on line 6
Process exited with code 255.
Output for hhvm-3.12.0
Fatal error: Uncaught Error: Cannot access empty property in /in/fNPEv:6 Stack trace: #0 {main}
Process exited with code 255.
Output for hhvm-3.10.0
Fatal error: Cannot access empty property in /in/fNPEv on line 6
Process exited with code 255.
Output for 5.0.5 - 5.6.28
Notice: Undefined variable: dog in /in/fNPEv on line 6 Fatal error: Cannot access empty property in /in/fNPEv on line 6
Process exited with code 255.
Output for 5.0.4
Notice: Undefined variable: dog in /in/fNPEv on line 6 Notice: Undefined property: stdClass::$ in /in/fNPEv on line 6
Output for 5.0.0 - 5.0.3
Notice: Undefined variable: dog in /in/fNPEv on line 6 Notice: Undefined property: stdClass::$ in /in/fNPEv on line 6
Output for 4.3.0 - 4.4.9
Notice: Undefined variable: dog in /in/fNPEv on line 6 Notice: Undefined property: in /in/fNPEv on line 6