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<?php $sys = 0; $admin = 1; $right = 123; $a = [1= 'Admin']; var_export($right !== $sys && ($a[$admin] ?? null));
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.7
Parse error: syntax error, unexpected '=', expecting ']' in /in/ZJbSH on line 5
Process exited with code 255.

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