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<?php trait t { const parent = parent::class; const grandparent = self::parent::class; } class x { use t; // valid but just don't even think about using x::parent, } class y extends x { use t; } class z extends y { } echo y::parent; // x echo z::parent; // y
Output for git.master, git.master_jit
Fatal error: (expression)::class cannot be used in constant expressions in /in/4s7KM on line 5 Stack trace: #0 {main}
Process exited with code 255.

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