3v4l.org

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<?php $f = []; $f[new stdClass] = 'a'; var_dump($f);
Output for 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: Cannot access offset of type stdClass on array in /in/LQiad:4 Stack trace: #0 {main} thrown in /in/LQiad on line 4
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18
Fatal error: Uncaught TypeError: Illegal offset type in /in/LQiad:4 Stack trace: #0 {main} thrown in /in/LQiad 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 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
Warning: Illegal offset type in /in/LQiad on line 4 array(0) { }
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/LQiad 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/LQiad on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/LQiad on line 3
Process exited with code 255.

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