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<?php $counts = []; $item = 1; $counts[$item] ?? $counts[$item] = 1 ?? $counts[$item]++; var_dump($counts);
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array(1) { [1]=> int(1) }
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Parse error: syntax error, unexpected '?' in /in/ZjWSn on line 6
Process exited with code 255.
preferences:
148.66 ms | 402 KiB | 183 Q