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<?php declare(strict_types = 1); echo $a?->foo; echo $a?->foo ?? ''; echo isset($a?->foo); echo $a->foo; echo $a->foo ?? ''; echo isset($a->foo);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $a in /in/bgVKX on line 3 Warning: Undefined variable $a in /in/bgVKX on line 7 Warning: Attempt to read property "foo" on null in /in/bgVKX on line 7

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