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<?php $obj = (object)[null]; var_dump($obj, $obj->${"0"});
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Warning: Undefined variable $0 in /in/TcuPJ on line 4 Warning: Undefined property: stdClass::$ in /in/TcuPJ on line 4 object(stdClass)#1 (1) { ["0"]=> NULL } NULL
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined variable: 0 in /in/TcuPJ on line 4 Notice: Undefined property: stdClass::$ in /in/TcuPJ on line 4 object(stdClass)#1 (1) { ["0"]=> NULL } NULL
Output for 7.3.32 - 7.3.33
object(stdClass)#1 (1) { ["0"]=> NULL } NULL
Output for 7.1.0 - 7.1.33
Notice: Undefined variable: 0 in /in/TcuPJ on line 4 Notice: Undefined property: stdClass::$ in /in/TcuPJ on line 4 object(stdClass)#1 (1) { [0]=> NULL } NULL
Output for 7.0.0 - 7.0.33
Notice: Undefined variable: 0 in /in/TcuPJ on line 4 Fatal error: Uncaught Error: Cannot access empty property in /in/TcuPJ:4 Stack trace: #0 {main} thrown in /in/TcuPJ on line 4
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Notice: Undefined variable: 0 in /in/TcuPJ on line 4 Fatal error: Cannot access empty property in /in/TcuPJ on line 4
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/TcuPJ on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/TcuPJ on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/TcuPJ on line 3
Process exited with code 255.

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