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<?php $counts = []; $item = 1; $counts[$item] ?? $counts[$item] = 1 ?? $counts[$item]++; $item = new StdClass; @$counts[$item] = "This is a bad use of error suppression."; var_dump($counts);
Output for 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: Cannot access offset of type stdClass on array in /in/mQT0B:8 Stack trace: #0 {main} thrown in /in/mQT0B on line 8
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/mQT0B:8 Stack trace: #0 {main} thrown in /in/mQT0B on line 8
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
array(1) { [1]=> int(1) }
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Parse error: syntax error, unexpected '?' in /in/mQT0B on line 5
Process exited with code 255.
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237.72 ms | 402 KiB | 327 Q