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<?php $obj->{123} = 456; $obj->{'456'} = 789; var_dump($obj->{123}, $obj->{'123'}, $obj->{456}, $obj->{'456'});
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Attempt to assign property "123" on null in /in/EU8V0:3 Stack trace: #0 {main} thrown in /in/EU8V0 on line 3
Process exited with code 255.

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