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<?php class Foo implements Stringable { public function __toString(): string { return 'FOO'; } public function __get(mixed $key): mixed { var_dump(compact('key')); return 1; } } $foo = new Foo(); $foo->foo; $foo->$foo; $foo->{1}; $foo->{false}; $foo->{null};
Output for git.master_jit, git.master
array(1) { ["key"]=> string(3) "foo" } array(1) { ["key"]=> string(3) "FOO" } array(1) { ["key"]=> string(1) "1" } array(1) { ["key"]=> string(0) "" } array(1) { ["key"]=> string(0) "" }

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