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<?php class A{} $a = new A(); $a->{"\n\n"} = 123; var_dump($a);
Output for git.master, git.master_jit, rfc.property-hooks
Deprecated: Creation of dynamic property A::$ is deprecated in /in/kK9DG on line 5 object(A)#1 (1) { [" "]=> int(123) }

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