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<?php class Test{} function returnTest(){return 'Test';} var_dump(new ${!${''} = 'Test'}); // string literal name works var_dump(new ${!${''} = returnTest()}); // function return value works var_dump(new ${!${''} = (new class() { // method invokation from anonymous function expression works function returnTest() : string{return 'Test';} })->returnTest()});

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